34578427 has 4 divisors (see below), whose sum is σ = 37238320. Its totient is φ = 31918536.

The previous prime is 34578413. The next prime is 34578433. The reversal of 34578427 is 72487543.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-34578427 is a prime.

It is a super-2 number, since 2×34578427² = 2391335227588658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34578427.

It is not an unprimeable number, because it can be changed into a prime (34578437) 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, 1329927 + ... + 1329952.

It is an arithmetic number, because the mean of its divisors is an integer number (9309580).

Almost surely, 2^34578427 is an apocalyptic number.

34578427 is a deficient number, since it is larger than the sum of its proper divisors (2659893).

34578427 is a wasteful number, since it uses less digits than its factorization.

34578427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659892.

The product of its digits is 188160, while the sum is 40.

The square root of 34578427 is about 5880.3424220023. The cubic root of 34578427 is about 325.7879955727.

The spelling of 34578427 in words is "thirty-four million, five hundred seventy-eight thousand, four hundred twenty-seven".