39304540 has 48 divisors (see below), whose sum is σ = 94792320. Its totient is φ = 13538880.

The previous prime is 39304523. The next prime is 39304543. The reversal of 39304540 is 4540393.

It is a super-2 number, since 2×39304540² = 3089693729223200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39304499 and 39304508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39304543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522 + ... + 8881.

It is an arithmetic number, because the mean of its divisors is an integer number (1974840).

Almost surely, 2^39304540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39304540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47396160).

39304540 is an abundant number, since it is smaller than the sum of its proper divisors (55487780).

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

39304540 is a wasteful number, since it uses less digits than its factorization.

39304540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9442 (or 9440 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 39304540 is about 6269.3332978874. Note that the first 3 decimals coincide. The cubic root of 39304540 is about 340.0015570863.

The spelling of 39304540 in words is "thirty-nine million, three hundred four thousand, five hundred forty".