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130404024 = 23321811167
BaseRepresentation
bin1111100010111…
…00111010111000
3100002101012200200
413301130322320
5231340412044
620535002200
73142262442
oct761347270
9302335620
10130404024
1167678523
1237809360
132102a65a
1413467492
15b6ad369
hex7c5ceb8

130404024 has 24 divisors (see below), whose sum is σ = 353177760. Its totient is φ = 43467984.

The previous prime is 130404023. The next prime is 130404037. The reversal of 130404024 is 420404031.

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 junction number, because it is equal to n+sod(n) for n = 130403988 and 130404006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130404023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 905512 + ... + 905655.

It is an arithmetic number, because the mean of its divisors is an integer number (14715740).

Almost surely, 2130404024 is an apocalyptic number.

It is an amenable number.

130404024 is an abundant number, since it is smaller than the sum of its proper divisors (222773736).

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

130404024 is a wasteful number, since it uses less digits than its factorization.

130404024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811179 (or 1811172 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 130404024 is about 11419.4581307521. The cubic root of 130404024 is about 507.1039549684.

Adding to 130404024 its reverse (420404031), we get a palindrome (550808055).

The spelling of 130404024 in words is "one hundred thirty million, four hundred four thousand, twenty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 1811167 3622334 5433501 7244668 10867002 14489336 16300503 21734004 32601006 43468008 65202012 130404024