15680412 has 96 divisors (see below), whose sum is σ = 45239040. Its totient is φ = 4656960.

The previous prime is 15680407. The next prime is 15680447. The reversal of 15680412 is 21408651.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79498 + ... + 79694.

It is an arithmetic number, because the mean of its divisors is an integer number (471240).

Almost surely, 2^15680412 is an apocalyptic number.

15680412 is a gapful number since it is divisible by the number (12) 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 15680412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22619520).

15680412 is an abundant number, since it is smaller than the sum of its proper divisors (29558628).

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

15680412 is a wasteful number, since it uses less digits than its factorization.

15680412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 15680412 is about 3959.8499971590. The cubic root of 15680412 is about 250.2951819998.

It can be divided in two parts, 156804 and 12, that added together give a square (156816 = 396²).

The spelling of 15680412 in words is "fifteen million, six hundred eighty thousand, four hundred twelve".