34020378 has 32 divisors (see below), whose sum is σ = 86401920. Its totient is φ = 9720000.

The previous prime is 34020373. The next prime is 34020391. The reversal of 34020378 is 87302043.

It is a super-2 number, since 2×34020378² = 2314772238525768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (34020373) 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, 44623 + ... + 45378.

It is an arithmetic number, because the mean of its divisors is an integer number (2700060).

Almost surely, 2^34020378 is an apocalyptic number.

34020378 is an abundant number, since it is smaller than the sum of its proper divisors (52381542).

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

34020378 is a wasteful number, since it uses less digits than its factorization.

34020378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90019 (or 90013 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 34020378 is about 5832.6990321806. The cubic root of 34020378 is about 324.0258895636.

The spelling of 34020378 in words is "thirty-four million, twenty thousand, three hundred seventy-eight".