72423776 has 12 divisors (see below), whose sum is σ = 142584372. Its totient is φ = 36211872.

The previous prime is 72423773. The next prime is 72423821. The reversal of 72423776 is 67732427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72423773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1131590 + ... + 1131653.

It is an arithmetic number, because the mean of its divisors is an integer number (11882031).

Almost surely, 2^72423776 is an apocalyptic number.

It is an amenable number.

72423776 is a deficient number, since it is larger than the sum of its proper divisors (70160596).

72423776 is a wasteful number, since it uses less digits than its factorization.

72423776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263253 (or 2263245 counting only the distinct ones).

The product of its digits is 98784, while the sum is 38.

The square root of 72423776 is about 8510.2159784579. The cubic root of 72423776 is about 416.8313625898.

The spelling of 72423776 in words is "seventy-two million, four hundred twenty-three thousand, seven hundred seventy-six".