15916020 has 96 divisors (see below), whose sum is σ = 47308800. Its totient is φ = 3991680.

The previous prime is 15916013. The next prime is 15916027. The reversal of 15916020 is 2061951.

It is an interprime number because it is at equal distance from previous prime (15916013) and next prime (15916027).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15916027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79881 + ... + 80079.

It is an arithmetic number, because the mean of its divisors is an integer number (492800).

Almost surely, 2^15916020 is an apocalyptic number.

15916020 is a gapful number since it is divisible by the number (10) 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 15916020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23654400).

15916020 is an abundant number, since it is smaller than the sum of its proper divisors (31392780).

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

15916020 is a wasteful number, since it uses less digits than its factorization.

15916020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 15916020 is about 3989.4886890427. The cubic root of 15916020 is about 251.5425690136.

Adding to 15916020 its reverse (2061951), we get a palindrome (17977971).

The spelling of 15916020 in words is "fifteen million, nine hundred sixteen thousand, twenty".