20374668 has 36 divisors (see below), whose sum is σ = 51826320. Its totient is φ = 6748896.

The previous prime is 20374667. The next prime is 20374693. The reversal of 20374668 is 86647302.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20374668² = 830254192220448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20374667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4318 + ... + 7706.

It is an arithmetic number, because the mean of its divisors is an integer number (1439620).

Almost surely, 2^20374668 is an apocalyptic number.

It is an amenable number.

20374668 is an abundant number, since it is smaller than the sum of its proper divisors (31451652).

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

20374668 is a wasteful number, since it uses less digits than its factorization.

20374668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566 (or 3561 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 20374668 is about 4513.8307456084. The cubic root of 20374668 is about 273.1262950644.

The spelling of 20374668 in words is "twenty million, three hundred seventy-four thousand, six hundred sixty-eight".