20929077 has 16 divisors (see below), whose sum is σ = 33391680. Its totient is φ = 12879216.

The previous prime is 20929063. The next prime is 20929099. The reversal of 20929077 is 77092902.

It is not a de Polignac number, because 20929077 - 2⁷ = 20928949 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20929177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29463 + ... + 30164.

It is an arithmetic number, because the mean of its divisors is an integer number (2086980).

Almost surely, 2^20929077 is an apocalyptic number.

20929077 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20929077 is a deficient number, since it is larger than the sum of its proper divisors (12462603).

20929077 is a wasteful number, since it uses less digits than its factorization.

20929077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59649 (or 59643 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 20929077 is about 4574.8308165439. The cubic root of 20929077 is about 275.5814781575.

The spelling of 20929077 in words is "twenty million, nine hundred twenty-nine thousand, seventy-seven".