20679600 has 120 divisors (see below), whose sum is σ = 69807040. Its totient is φ = 5218560.

The previous prime is 20679587. The next prime is 20679613. The reversal of 20679600 is 697602.

It is an interprime number because it is at equal distance from previous prime (20679587) and next prime (20679613).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

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 23 ways as a sum of consecutive naturals, for example, 22347 + ... + 23253.

Almost surely, 2^20679600 is an apocalyptic number.

20679600 is a gapful number since it is divisible by the number (20) 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 20679600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34903520).

20679600 is an abundant number, since it is smaller than the sum of its proper divisors (49127440).

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

20679600 is a wasteful number, since it uses less digits than its factorization.

20679600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20679600 is about 4547.4828201984. The cubic root of 20679600 is about 274.4821107051.

The spelling of 20679600 in words is "twenty million, six hundred seventy-nine thousand, six hundred".