20764078 has 16 divisors (see below), whose sum is σ = 32652576. Its totient is φ = 9884160.

The previous prime is 20764063. The next prime is 20764091. The reversal of 20764078 is 87046702.

It is a super-2 number, since 2×20764078² = 862293870380168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10150 + ... + 12022.

It is an arithmetic number, because the mean of its divisors is an integer number (2040786).

Almost surely, 2^20764078 is an apocalyptic number.

20764078 is a deficient number, since it is larger than the sum of its proper divisors (11888498).

20764078 is a wasteful number, since it uses less digits than its factorization.

20764078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 20764078 is about 4556.7617888145. The cubic root of 20764078 is about 274.8553641627.

The spelling of 20764078 in words is "twenty million, seven hundred sixty-four thousand, seventy-eight".