16220870 has 32 divisors (see below), whose sum is σ = 31276800. Its totient is φ = 6038496.

The previous prime is 16220807. The next prime is 16220881. The reversal of 16220870 is 7802261.

16220870 = T₁₇₃ + T₁₇₄ + ... + T₄₆₇.

It is a Curzon number.

It is a plaindrome in base 14.

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, 10487 + ... + 11933.

It is an arithmetic number, because the mean of its divisors is an integer number (977400).

Almost surely, 2^16220870 is an apocalyptic number.

16220870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16220870 is a deficient number, since it is larger than the sum of its proper divisors (15055930).

16220870 is a wasteful number, since it uses less digits than its factorization.

16220870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 16220870 is about 4027.5141216388. The cubic root of 16220870 is about 253.1384099993.

The spelling of 16220870 in words is "sixteen million, two hundred twenty thousand, eight hundred seventy".