72293164 has 6 divisors (see below), whose sum is σ = 126513044. Its totient is φ = 36146580.

The previous prime is 72293149. The next prime is 72293167. The reversal of 72293164 is 46139227.

It is a super-2 number, since 2×72293164² = 10452603122261792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72293167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9036642 + ... + 9036649.

Almost surely, 2^72293164 is an apocalyptic number.

It is an amenable number.

72293164 is a deficient number, since it is larger than the sum of its proper divisors (54219880).

72293164 is a wasteful number, since it uses less digits than its factorization.

72293164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18073295 (or 18073293 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 72293164 is about 8502.5386797121. The cubic root of 72293164 is about 416.5806348955.

The spelling of 72293164 in words is "seventy-two million, two hundred ninety-three thousand, one hundred sixty-four".