73153988 has 12 divisors (see below), whose sum is σ = 128231292. Its totient is φ = 36516480.

The previous prime is 73153987. The next prime is 73153991. The reversal of 73153988 is 88935137.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34316164 + 38837824 = 5858^2 + 6232^2 .

It is not an unprimeable number, because it can be changed into a prime (73153987) 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 3 ways as a sum of consecutive naturals, for example, 12353 + ... + 17288.

It is an arithmetic number, because the mean of its divisors is an integer number (10685941).

Almost surely, 2^73153988 is an apocalyptic number.

It is an amenable number.

73153988 is a deficient number, since it is larger than the sum of its proper divisors (55077304).

73153988 is a wasteful number, since it uses less digits than its factorization.

73153988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30262 (or 30260 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 73153988 is about 8553.0104641582. The cubic root of 73153988 is about 418.2275799551.

The spelling of 73153988 in words is "seventy-three million, one hundred fifty-three thousand, nine hundred eighty-eight".