15878496 has 48 divisors (see below), whose sum is σ = 41945904. Its totient is φ = 5259264.

The previous prime is 15878491. The next prime is 15878497. The reversal of 15878496 is 69487851.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-4 number, since 4×15878496⁴ (a number of 30 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15878491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18100 + ... + 18956.

It is an arithmetic number, because the mean of its divisors is an integer number (873873).

Almost surely, 2^15878496 is an apocalyptic number.

15878496 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 15878496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20972952).

15878496 is an abundant number, since it is smaller than the sum of its proper divisors (26067408).

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

15878496 is a wasteful number, since it uses less digits than its factorization.

15878496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063 (or 1055 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 15878496 is about 3984.7830555753. The cubic root of 15878496 is about 251.3447324759.

The spelling of 15878496 in words is "fifteen million, eight hundred seventy-eight thousand, four hundred ninety-six".