15201972 has 24 divisors (see below), whose sum is σ = 39412800. Its totient is φ = 5067288.

The previous prime is 15201971. The next prime is 15202007. The reversal of 15201972 is 27910251.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15201971) 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, 70272 + ... + 70487.

It is an arithmetic number, because the mean of its divisors is an integer number (1642200).

Almost surely, 2^15201972 is an apocalyptic number.

15201972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15201972 is an abundant number, since it is smaller than the sum of its proper divisors (24210828).

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

15201972 is a wasteful number, since it uses less digits than its factorization.

15201972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140772 (or 140764 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 15201972 is about 3898.9706333852. The cubic root of 15201972 is about 247.7231779405.

The spelling of 15201972 in words is "fifteen million, two hundred one thousand, nine hundred seventy-two".