15220070 has 32 divisors (see below), whose sum is σ = 29272320. Its totient is φ = 5685120.

The previous prime is 15220069. The next prime is 15220081. The reversal of 15220070 is 7002251.

It is a Curzon number.

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, 8144 + ... + 9836.

It is an arithmetic number, because the mean of its divisors is an integer number (914760).

Almost surely, 2^15220070 is an apocalyptic number.

15220070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15220070 is a deficient number, since it is larger than the sum of its proper divisors (14052250).

15220070 is a wasteful number, since it uses less digits than its factorization.

15220070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 15220070 is about 3901.2908120262. The cubic root of 15220070 is about 247.8214440541.

The spelling of 15220070 in words is "fifteen million, two hundred twenty thousand, seventy".