34721900 has 36 divisors (see below), whose sum is σ = 75646200. Its totient is φ = 13833600.

The previous prime is 34721867. The next prime is 34721909. The reversal of 34721900 is 912743.

It is a super-2 number, since 2×34721900² = 2411220679220000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 34721900.

It is not an unprimeable number, because it can be changed into a prime (34721909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32576 + ... + 33624.

Almost surely, 2^34721900 is an apocalyptic number.

It is an amenable number.

34721900 is an abundant number, since it is smaller than the sum of its proper divisors (40924300).

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

34721900 is a wasteful number, since it uses less digits than its factorization.

34721900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 34721900 is about 5892.5291683623. The cubic root of 34721900 is about 326.2379609284.

The spelling of 34721900 in words is "thirty-four million, seven hundred twenty-one thousand, nine hundred".