34978220 has 12 divisors (see below), whose sum is σ = 73454304. Its totient is φ = 13991280.

The previous prime is 34978217. The next prime is 34978243. The reversal of 34978220 is 2287943.

34978220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874436 + ... + 874475.

It is an arithmetic number, because the mean of its divisors is an integer number (6121192).

Almost surely, 2^34978220 is an apocalyptic number.

It is an amenable number.

34978220 is an abundant number, since it is smaller than the sum of its proper divisors (38476084).

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

34978220 is a wasteful number, since it uses less digits than its factorization.

34978220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748920 (or 1748918 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 34978220 is about 5914.2387506762. The cubic root of 34978220 is about 327.0387656785.

The spelling of 34978220 in words is "thirty-four million, nine hundred seventy-eight thousand, two hundred twenty".