34521940 has 24 divisors (see below), whose sum is σ = 72908640. Its totient is φ = 13730208.

The previous prime is 34521899. The next prime is 34521947. The reversal of 34521940 is 4912543.

It is a junction number, because it is equal to n+sod(n) for n = 34521899 and 34521908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34521947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1242 + ... + 8401.

It is an arithmetic number, because the mean of its divisors is an integer number (3037860).

Almost surely, 2^34521940 is an apocalyptic number.

It is an amenable number.

34521940 is an abundant number, since it is smaller than the sum of its proper divisors (38386700).

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

34521940 is a wasteful number, since it uses less digits than its factorization.

34521940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9831 (or 9829 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 34521940 is about 5875.5374222279. The cubic root of 34521940 is about 325.6104974611.

The spelling of 34521940 in words is "thirty-four million, five hundred twenty-one thousand, nine hundred forty".