16620072 has 32 divisors (see below), whose sum is σ = 47486400. Its totient is φ = 4748544.

The previous prime is 16620049. The next prime is 16620119. The reversal of 16620072 is 27002661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 7 ways as a sum of consecutive naturals, for example, 49297 + ... + 49632.

It is an arithmetic number, because the mean of its divisors is an integer number (1483950).

Almost surely, 2^16620072 is an apocalyptic number.

16620072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16620072 is an abundant number, since it is smaller than the sum of its proper divisors (30866328).

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

16620072 is a wasteful number, since it uses less digits than its factorization.

16620072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98945 (or 98941 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 16620072 is about 4076.7722526528. The cubic root of 16620072 is about 255.1982157414.

The spelling of 16620072 in words is "sixteen million, six hundred twenty thousand, seventy-two".