72285572 has 6 divisors (see below), whose sum is σ = 126499758. Its totient is φ = 36142784.

The previous prime is 72285571. The next prime is 72285601. The reversal of 72285572 is 27558227.

It can be written as a sum of positive squares in only one way, i.e., 61089856 + 11195716 = 7816^2 + 3346^2 .

It is not an unprimeable number, because it can be changed into a prime (72285571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9035693 + ... + 9035700.

It is an arithmetic number, because the mean of its divisors is an integer number (21083293).

Almost surely, 2^72285572 is an apocalyptic number.

It is an amenable number.

72285572 is a deficient number, since it is larger than the sum of its proper divisors (54214186).

72285572 is a wasteful number, since it uses less digits than its factorization.

72285572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18071397 (or 18071395 counting only the distinct ones).

The product of its digits is 78400, while the sum is 38.

The square root of 72285572 is about 8502.0922130967. The cubic root of 72285572 is about 416.5660517237.

The spelling of 72285572 in words is "seventy-two million, two hundred eighty-five thousand, five hundred seventy-two".