16055820 has 240 divisors, whose sum is σ = 59276448. Its totient is φ = 3594240.

The previous prime is 16055807. The next prime is 16055833. The reversal of 16055820 is 2855061.

16055820 is a `hidden beast` number, since 1 + 605 + 58 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (16055807) and next prime (16055833).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 302914 + ... + 302966.

Almost surely, 2^16055820 is an apocalyptic number.

16055820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16055820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29638224).

16055820 is an abundant number, since it is smaller than the sum of its proper divisors (43220628).

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

16055820 is a wasteful number, since it uses less digits than its factorization.

16055820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 16055820 is about 4006.9714249044. The cubic root of 16055820 is about 252.2769064983.

The spelling of 16055820 in words is "sixteen million, fifty-five thousand, eight hundred twenty".