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130423032 = 23321811431
BaseRepresentation
bin1111100011000…
…01100011111000
3100002102011202200
413301201203320
5231342014112
620535230200
73142402035
oct761414370
9302364680
10130423032
1167690833
1237818360
13210361bc
141347038c
15b6b3cdc
hex7c618f8

130423032 has 24 divisors (see below), whose sum is σ = 353229240. Its totient is φ = 43474320.

The previous prime is 130423001. The next prime is 130423061. The reversal of 130423032 is 230324031.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 130422996 and 130423014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 905644 + ... + 905787.

It is an arithmetic number, because the mean of its divisors is an integer number (14717885).

Almost surely, 2130423032 is an apocalyptic number.

130423032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130423032 is an abundant number, since it is smaller than the sum of its proper divisors (222806208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130423032 is a wasteful number, since it uses less digits than its factorization.

130423032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811443 (or 1811436 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 130423032 is about 11420.2903640844. The cubic root of 130423032 is about 507.1285926633.

Adding to 130423032 its reverse (230324031), we get a palindrome (360747063).

Subtracting 130423032 from its reverse (230324031), we obtain a palindrome (99900999).

It can be divided in two parts, 1304 and 23032, that added together give a square (24336 = 1562).

The spelling of 130423032 in words is "one hundred thirty million, four hundred twenty-three thousand, thirty-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 1811431 3622862 5434293 7245724 10868586 14491448 16302879 21737172 32605758 43474344 65211516 130423032