20567994 has 32 divisors (see below), whose sum is σ = 45852480. Its totient is φ = 6112512.

The previous prime is 20567983. The next prime is 20568001. The reversal of 20567994 is 49976502.

It is a Curzon 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, 3369 + ... + 7244.

It is an arithmetic number, because the mean of its divisors is an integer number (1432890).

Almost surely, 2^20567994 is an apocalyptic number.

20567994 is an abundant number, since it is smaller than the sum of its proper divisors (25284486).

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

20567994 is a wasteful number, since it uses less digits than its factorization.

20567994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10654.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 20567994 is about 4535.1950343949. The cubic root of 20567994 is about 273.9874343786.

The spelling of 20567994 in words is "twenty million, five hundred sixty-seven thousand, nine hundred ninety-four".