72784976 has 20 divisors (see below), whose sum is σ = 153841344. Its totient is φ = 33084000.

The previous prime is 72784969. The next prime is 72784979. The reversal of 72784976 is 67948727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72784979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206600 + ... + 206951.

Almost surely, 2^72784976 is an apocalyptic number.

It is an amenable number.

72784976 is an abundant number, since it is smaller than the sum of its proper divisors (81056368).

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

72784976 is a wasteful number, since it uses less digits than its factorization.

72784976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413570 (or 413564 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 50.

The square root of 72784976 is about 8531.4111376724. The cubic root of 72784976 is about 417.5231698569.

The spelling of 72784976 in words is "seventy-two million, seven hundred eighty-four thousand, nine hundred seventy-six".