16156020 has 48 divisors (see below), whose sum is σ = 45440640. Its totient is φ = 4288896.

The previous prime is 16155989. The next prime is 16156027. The reversal of 16156020 is 2065161.

It is a happy number.

It is a super-2 number, since 2×16156020² = 522033964480800, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16156027) by changing a digit.

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, 17121 + ... + 18039.

It is an arithmetic number, because the mean of its divisors is an integer number (946680).

Almost surely, 2^16156020 is an apocalyptic number.

16156020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16156020 is an abundant number, since it is smaller than the sum of its proper divisors (29284620).

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

16156020 is a wasteful number, since it uses less digits than its factorization.

16156020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 16156020 is about 4019.4551869625. The cubic root of 16156020 is about 252.8006157185.

The spelling of 16156020 in words is "sixteen million, one hundred fifty-six thousand, twenty".