20776974 has 8 divisors (see below), whose sum is σ = 41553960. Its totient is φ = 6925656.

The previous prime is 20776969. The next prime is 20776991. The reversal of 20776974 is 47967702.

It is a sphenic number, since it is the product of 3 distinct primes.

20776974 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1731409 + ... + 1731420.

It is an arithmetic number, because the mean of its divisors is an integer number (5194245).

Almost surely, 2^20776974 is an apocalyptic number.

20776974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20776974 is a wasteful number, since it uses less digits than its factorization.

20776974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462834.

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 20776974 is about 4558.1766091278. The cubic root of 20776974 is about 274.9122540990.

The spelling of 20776974 in words is "twenty million, seven hundred seventy-six thousand, nine hundred seventy-four".