72783452 has 24 divisors (see below), whose sum is σ = 153229440. Its totient is φ = 29550960.

The previous prime is 72783439. The next prime is 72783457. The reversal of 72783452 is 25438727.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72783457) 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 in 7 ways as a sum of consecutive naturals, for example, 67874 + ... + 68937.

It is an arithmetic number, because the mean of its divisors is an integer number (6384560).

Almost surely, 2^72783452 is an apocalyptic number.

It is an amenable number.

72783452 is an abundant number, since it is smaller than the sum of its proper divisors (80445988).

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

72783452 is a wasteful number, since it uses less digits than its factorization.

72783452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136841 (or 136839 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 72783452 is about 8531.3218202105. The cubic root of 72783452 is about 417.5202557493.

The spelling of 72783452 in words is "seventy-two million, seven hundred eighty-three thousand, four hundred fifty-two".