72583780 has 24 divisors (see below), whose sum is σ = 154703808. Its totient is φ = 28599648.

The previous prime is 72583759. The next prime is 72583801. The reversal of 72583780 is 8738527.

It is an interprime number because it is at equal distance from previous prime (72583759) and next prime (72583801).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25744 + ... + 28423.

It is an arithmetic number, because the mean of its divisors is an integer number (6445992).

Almost surely, 2^72583780 is an apocalyptic number.

It is an amenable number.

72583780 is an abundant number, since it is smaller than the sum of its proper divisors (82120028).

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

72583780 is a wasteful number, since it uses less digits than its factorization.

72583780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54243 (or 54241 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 72583780 is about 8519.6114934896. The cubic root of 72583780 is about 417.1381017741.

The spelling of 72583780 in words is "seventy-two million, five hundred eighty-three thousand, seven hundred eighty".