42878304 has 72 divisors (see below), whose sum is σ = 139361040. Its totient is φ = 12250368.

The previous prime is 42878299. The next prime is 42878317. The reversal of 42878304 is 40387824.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8619 + ... + 12650.

It is an arithmetic number, because the mean of its divisors is an integer number (1935570).

Almost surely, 2^42878304 is an apocalyptic number.

It is an amenable number.

42878304 is an abundant number, since it is smaller than the sum of its proper divisors (96482736).

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

42878304 is a wasteful number, since it uses less digits than its factorization.

42878304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21292 (or 21281 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 42878304 is about 6548.1527166064. The cubic root of 42878304 is about 350.0089902453.

The spelling of 42878304 in words is "forty-two million, eight hundred seventy-eight thousand, three hundred four".