71372990 has 16 divisors (see below), whose sum is σ = 138354048. Its totient is φ = 26353056.

The previous prime is 71372981. The next prime is 71372993. The reversal of 71372990 is 9927317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71372993) 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, 274382 + ... + 274641.

It is an arithmetic number, because the mean of its divisors is an integer number (8647128).

Almost surely, 2^71372990 is an apocalyptic number.

71372990 is a deficient number, since it is larger than the sum of its proper divisors (66981058).

71372990 is a wasteful number, since it uses less digits than its factorization.

71372990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549043.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 71372990 is about 8448.2536656992. The cubic root of 71372990 is about 414.8056185534.

The spelling of 71372990 in words is "seventy-one million, three hundred seventy-two thousand, nine hundred ninety".