42776864 has 24 divisors (see below), whose sum is σ = 90696060. Its totient is φ = 19742976.

The previous prime is 42776863. The next prime is 42776891. The reversal of 42776864 is 46867724.

It can be written as a sum of positive squares in 2 ways, for example, as 37112464 + 5664400 = 6092^2 + 2380^2 .

It is not an unprimeable number, because it can be changed into a prime (42776863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50999 + ... + 51830.

Almost surely, 2^42776864 is an apocalyptic number.

It is an amenable number.

42776864 is an abundant number, since it is smaller than the sum of its proper divisors (47919196).

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

42776864 is a wasteful number, since it uses less digits than its factorization.

42776864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102852 (or 102844 counting only the distinct ones).

The product of its digits is 451584, while the sum is 44.

The square root of 42776864 is about 6540.4024341014. The cubic root of 42776864 is about 349.7327592669.

The spelling of 42776864 in words is "forty-two million, seven hundred seventy-six thousand, eight hundred sixty-four".