73382640 has 40 divisors (see below), whose sum is σ = 227486928. Its totient is φ = 19568640.

The previous prime is 73382629. The next prime is 73382641. The reversal of 73382640 is 4628337.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73382641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152641 + ... + 153120.

Almost surely, 2^73382640 is an apocalyptic number.

It is an amenable number.

73382640 is an abundant number, since it is smaller than the sum of its proper divisors (154104288).

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

73382640 is a wasteful number, since it uses less digits than its factorization.

73382640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305777 (or 305771 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 73382640 is about 8566.3667911198. The cubic root of 73382640 is about 418.6628677402.

It can be divided in two parts, 733826 and 40, that added together give a triangular number (733866 = T₁₂₁₁).

The spelling of 73382640 in words is "seventy-three million, three hundred eighty-two thousand, six hundred forty".