34578940 has 24 divisors (see below), whose sum is σ = 79217712. Its totient is φ = 12574080.

The previous prime is 34578931. The next prime is 34578941. The reversal of 34578940 is 4987543.

It is a junction number, because it is equal to n+sod(n) for n = 34578893 and 34578902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34578941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78369 + ... + 78808.

It is an arithmetic number, because the mean of its divisors is an integer number (3300738).

Almost surely, 2^34578940 is an apocalyptic number.

It is an amenable number.

34578940 is an abundant number, since it is smaller than the sum of its proper divisors (44638772).

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

34578940 is a wasteful number, since it uses less digits than its factorization.

34578940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157197 (or 157195 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 34578940 is about 5880.3860417493. The cubic root of 34578940 is about 325.7896066776.

The spelling of 34578940 in words is "thirty-four million, five hundred seventy-eight thousand, nine hundred forty".