34878520 has 16 divisors (see below), whose sum is σ = 78476760. Its totient is φ = 13951392.

The previous prime is 34878497. The next prime is 34878521. The reversal of 34878520 is 2587843.

It is a super-2 number, since 2×34878520² = 2433022314780800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 34878520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34878521) 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, 435942 + ... + 436021.

Almost surely, 2^34878520 is an apocalyptic number.

It is an amenable number.

34878520 is an abundant number, since it is smaller than the sum of its proper divisors (43598240).

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

34878520 is a wasteful number, since it uses less digits than its factorization.

34878520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871974 (or 871970 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 34878520 is about 5905.8039249538. The cubic root of 34878520 is about 326.7277455321.

The spelling of 34878520 in words is "thirty-four million, eight hundred seventy-eight thousand, five hundred twenty".