15220254 has 32 divisors (see below), whose sum is σ = 36622080. Its totient is φ = 4119552.

The previous prime is 15220243. The next prime is 15220267. The reversal of 15220254 is 45202251.

It is a happy number.

It is a super-2 number, since 2×15220254² = 463312263649032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 15220254.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8739 + ... + 10334.

It is an arithmetic number, because the mean of its divisors is an integer number (1144440).

Almost surely, 2^15220254 is an apocalyptic number.

15220254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

15220254 is an abundant number, since it is smaller than the sum of its proper divisors (21401826).

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

15220254 is a wasteful number, since it uses less digits than its factorization.

15220254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19104.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 15220254 is about 3901.3143938934. The cubic root of 15220254 is about 247.8224427127.

The spelling of 15220254 in words is "fifteen million, two hundred twenty thousand, two hundred fifty-four".