15220850 has 12 divisors (see below), whose sum is σ = 28310874. Its totient is φ = 6088320.

The previous prime is 15220841. The next prime is 15220861. The reversal of 15220850 is 5802251.

It can be written as a sum of positive squares in 3 ways, for example, as 9320809 + 5900041 = 3053^2 + 2429^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152159 + ... + 152258.

Almost surely, 2^15220850 is an apocalyptic number.

15220850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15220850 is a deficient number, since it is larger than the sum of its proper divisors (13090024).

15220850 is a wasteful number, since it uses less digits than its factorization.

15220850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304429 (or 304424 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 15220850 is about 3901.3907776587. The cubic root of 15220850 is about 247.8256774430.

The spelling of 15220850 in words is "fifteen million, two hundred twenty thousand, eight hundred fifty".