16552620 has 192 divisors, whose sum is σ = 61286400. Its totient is φ = 3628800.

The previous prime is 16552619. The next prime is 16552651. The reversal of 16552620 is 2625561.

16552620 is a `hidden beast` number, since 1 + 655 + 2 + 6 + 2 + 0 = 666.

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

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 63 ways as a sum of consecutive naturals, for example, 109545 + ... + 109695.

It is an arithmetic number, because the mean of its divisors is an integer number (319200).

Almost surely, 2^16552620 is an apocalyptic number.

16552620 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 16552620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30643200).

16552620 is an abundant number, since it is smaller than the sum of its proper divisors (44733780).

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

16552620 is a wasteful number, since it uses less digits than its factorization.

16552620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 16552620 is about 4068.4911207965. The cubic root of 16552620 is about 254.8525098649.

The spelling of 16552620 in words is "sixteen million, five hundred fifty-two thousand, six hundred twenty".