15306972 has 24 divisors (see below), whose sum is σ = 35816592. Its totient is φ = 5088000.

The previous prime is 15306971. The next prime is 15306997. The reversal of 15306972 is 27960351.

15306972 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15306971) 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, 3222 + ... + 6402.

It is an arithmetic number, because the mean of its divisors is an integer number (1492358).

Almost surely, 2^15306972 is an apocalyptic number.

15306972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15306972 is an abundant number, since it is smaller than the sum of its proper divisors (20509620).

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

15306972 is a wasteful number, since it uses less digits than its factorization.

15306972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589 (or 3587 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 15306972 is about 3912.4125549333. The cubic root of 15306972 is about 248.2922110589.

The spelling of 15306972 in words is "fifteen million, three hundred six thousand, nine hundred seventy-two".