15897456 has 60 divisors (see below), whose sum is σ = 45352008. Its totient is φ = 5196672.

The previous prime is 15897443. The next prime is 15897473. The reversal of 15897456 is 65479851.

15897456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6591 + ... + 8673.

Almost surely, 2^15897456 is an apocalyptic number.

15897456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15897456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22676004).

15897456 is an abundant number, since it is smaller than the sum of its proper divisors (29454552).

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

15897456 is a wasteful number, since it uses less digits than its factorization.

15897456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150 (or 2141 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 15897456 is about 3987.1613962818. The cubic root of 15897456 is about 251.4447335636. Note that the first 3 decimals are identical.

It can be divided in two parts, 1589 and 7456, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 15897456 in words is "fifteen million, eight hundred ninety-seven thousand, four hundred fifty-six".