20112678 has 32 divisors (see below), whose sum is σ = 47049600. Its totient is φ = 6351048.

The previous prime is 20112661. The next prime is 20112721. The reversal of 20112678 is 87621102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8776 + ... + 10827.

It is an arithmetic number, because the mean of its divisors is an integer number (1470300).

Almost surely, 2^20112678 is an apocalyptic number.

20112678 is an abundant number, since it is smaller than the sum of its proper divisors (26936922).

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

20112678 is a wasteful number, since it uses less digits than its factorization.

20112678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19633 (or 19627 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 20112678 is about 4484.7160445228. The cubic root of 20112678 is about 271.9505659153.

The spelling of 20112678 in words is "twenty million, one hundred twelve thousand, six hundred seventy-eight".