73641572 has 6 divisors (see below), whose sum is σ = 128872758. Its totient is φ = 36820784.

The previous prime is 73641571. The next prime is 73641583. The reversal of 73641572 is 27514637.

It can be written as a sum of positive squares in only one way, i.e., 63744256 + 9897316 = 7984^2 + 3146^2 .

It is a super-2 number, since 2×73641572² = 10846162253262368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73641571) 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 as a sum of consecutive naturals, namely, 9205193 + ... + 9205200.

It is an arithmetic number, because the mean of its divisors is an integer number (21478793).

Almost surely, 2^73641572 is an apocalyptic number.

It is an amenable number.

73641572 is a deficient number, since it is larger than the sum of its proper divisors (55231186).

73641572 is a wasteful number, since it uses less digits than its factorization.

73641572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18410397 (or 18410395 counting only the distinct ones).

The product of its digits is 35280, while the sum is 35.

The square root of 73641572 is about 8581.4667743924. The cubic root of 73641572 is about 419.1547095880.

The spelling of 73641572 in words is "seventy-three million, six hundred forty-one thousand, five hundred seventy-two".