20876769 has 24 divisors (see below), whose sum is σ = 31442112. Its totient is φ = 13335840.

The previous prime is 20876767. The next prime is 20876771. The reversal of 20876769 is 96767802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20876767) and next prime (20876771).

It is not a de Polignac number, because 20876769 - 2¹ = 20876767 is a prime.

It is a super-2 number, since 2×20876769² = 871678967758722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20876767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23202 + ... + 24084.

It is an arithmetic number, because the mean of its divisors is an integer number (1310088).

Almost surely, 2^20876769 is an apocalyptic number.

It is an amenable number.

20876769 is a deficient number, since it is larger than the sum of its proper divisors (10565343).

20876769 is a wasteful number, since it uses less digits than its factorization.

20876769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 994 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 20876769 is about 4569.1103072699. The cubic root of 20876769 is about 275.3516998785.

The spelling of 20876769 in words is "twenty million, eight hundred seventy-six thousand, seven hundred sixty-nine".