15220874 has 8 divisors (see below), whose sum is σ = 23033700. Its totient is φ = 7542976.

The previous prime is 15220867. The next prime is 15220883. The reversal of 15220874 is 47802251.

It can be written as a sum of positive squares in 2 ways, for example, as 8743849 + 6477025 = 2957^2 + 2545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33449 + ... + 33900.

Almost surely, 2^15220874 is an apocalyptic number.

15220874 is a deficient number, since it is larger than the sum of its proper divisors (7812826).

15220874 is a wasteful number, since it uses less digits than its factorization.

15220874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67464.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 15220874 is about 3901.3938534836. The cubic root of 15220874 is about 247.8258076988.

The spelling of 15220874 in words is "fifteen million, two hundred twenty thousand, eight hundred seventy-four".