15901420 has 12 divisors (see below), whose sum is σ = 33393024. Its totient is φ = 6360560.

The previous prime is 15901381. The next prime is 15901427. The reversal of 15901420 is 2410951.

It is a junction number, because it is equal to n+sod(n) for n = 15901391 and 15901400.

It is not an unprimeable number, because it can be changed into a prime (15901427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397516 + ... + 397555.

It is an arithmetic number, because the mean of its divisors is an integer number (2782752).

Almost surely, 2^15901420 is an apocalyptic number.

15901420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15901420 is an abundant number, since it is smaller than the sum of its proper divisors (17491604).

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

15901420 is a wasteful number, since it uses less digits than its factorization.

15901420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795080 (or 795078 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 15901420 is about 3987.6584608013. The cubic root of 15901420 is about 251.4656309133.

The spelling of 15901420 in words is "fifteen million, nine hundred one thousand, four hundred twenty".