15040416 has 24 divisors (see below), whose sum is σ = 39481344. Its totient is φ = 5013440.

The previous prime is 15040391. The next prime is 15040429. The reversal of 15040416 is 61404051.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×15040416² = 452428226906112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15040392 and 15040401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78240 + ... + 78431.

It is an arithmetic number, because the mean of its divisors is an integer number (1645056).

Almost surely, 2^15040416 is an apocalyptic number.

15040416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15040416 is an abundant number, since it is smaller than the sum of its proper divisors (24440928).

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

15040416 is a wasteful number, since it uses less digits than its factorization.

15040416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156684 (or 156676 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 15040416 is about 3878.1975194670. The cubic root of 15040416 is about 246.8425075220.

Adding to 15040416 its reverse (61404051), we get a palindrome (76444467).

Subtracting 15040416 from its reverse (61404051), we obtain a triangular number (46363635 = T₉₆₂₉).

The spelling of 15040416 in words is "fifteen million, forty thousand, four hundred sixteen".