15220974 has 16 divisors (see below), whose sum is σ = 30665808. Its totient is φ = 5036352.

The previous prime is 15220973. The next prime is 15220979. The reversal of 15220974 is 47902251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15220973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8437 + ... + 10080.

It is an arithmetic number, because the mean of its divisors is an integer number (1916613).

Almost surely, 2^15220974 is an apocalyptic number.

15220974 is an abundant number, since it is smaller than the sum of its proper divisors (15444834).

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

15220974 is a wasteful number, since it uses less digits than its factorization.

15220974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18659.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 15220974 is about 3901.4066693950. The cubic root of 15220974 is about 247.8263504300.

The spelling of 15220974 in words is "fifteen million, two hundred twenty thousand, nine hundred seventy-four".