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1401630 = 235192459
BaseRepresentation
bin101010110001100011110
32122012200020
411112030132
5324323010
650013010
714625246
oct5261436
92565606
101401630
1187807a
12577166
133a0c89
14286b26
151ca470
hex15631e

1401630 has 32 divisors (see below), whose sum is σ = 3542400. Its totient is φ = 353952.

The previous prime is 1401629. The next prime is 1401641. The reversal of 1401630 is 361041.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660 + ... + 1799.

It is an arithmetic number, because the mean of its divisors is an integer number (110700).

21401630 is an apocalyptic number.

1401630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1401630 is an abundant number, since it is smaller than the sum of its proper divisors (2140770).

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

1401630 is a wasteful number, since it uses less digits than its factorization.

1401630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1401630 is about 1183.9045569639. The cubic root of 1401630 is about 111.9122931547.

Adding to 1401630 its reverse (361041), we get a palindrome (1762671).

It can be divided in two parts, 140 and 1630, that added together give a triangular number (1770 = T59).

The spelling of 1401630 in words is "one million, four hundred one thousand, six hundred thirty".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 2459 4918 7377 12295 14754 24590 36885 46721 73770 93442 140163 233605 280326 467210 700815 1401630