72069990 has 16 divisors (see below), whose sum is σ = 172968048. Its totient is φ = 19218656.

The previous prime is 72069967. The next prime is 72070001. The reversal of 72069990 is 9996027.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201137 + ... + 1201196.

It is an arithmetic number, because the mean of its divisors is an integer number (10810503).

Almost surely, 2^72069990 is an apocalyptic number.

72069990 is an abundant number, since it is smaller than the sum of its proper divisors (100898058).

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

72069990 is a wasteful number, since it uses less digits than its factorization.

72069990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402343.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 72069990 is about 8489.4045727601. The cubic root of 72069990 is about 416.1515219424.

The spelling of 72069990 in words is "seventy-two million, sixty-nine thousand, nine hundred ninety".