34685720 has 16 divisors (see below), whose sum is σ = 78042960. Its totient is φ = 13874272.

The previous prime is 34685719. The next prime is 34685737. The reversal of 34685720 is 2758643.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433532 + ... + 433611.

It is an arithmetic number, because the mean of its divisors is an integer number (4877685).

Almost surely, 2^34685720 is an apocalyptic number.

It is an amenable number.

34685720 is an abundant number, since it is smaller than the sum of its proper divisors (43357240).

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

34685720 is a wasteful number, since it uses less digits than its factorization.

34685720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867154 (or 867150 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 34685720 is about 5889.4583791721. The cubic root of 34685720 is about 326.1246089186.

The spelling of 34685720 in words is "thirty-four million, six hundred eighty-five thousand, seven hundred twenty".