73988642 has 16 divisors (see below), whose sum is σ = 136594752. Its totient is φ = 29270160.

The previous prime is 73988633. The next prime is 73988647. The reversal of 73988642 is 24688937.

It is not an unprimeable number, because it can be changed into a prime (73988647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203084 + ... + 203447.

It is an arithmetic number, because the mean of its divisors is an integer number (8537172).

Almost surely, 2^73988642 is an apocalyptic number.

73988642 is a deficient number, since it is larger than the sum of its proper divisors (62606110).

73988642 is a wasteful number, since it uses less digits than its factorization.

73988642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406553.

The product of its digits is 580608, while the sum is 47.

The square root of 73988642 is about 8601.6650713684. The cubic root of 73988642 is about 419.8121646848.

The spelling of 73988642 in words is "seventy-three million, nine hundred eighty-eight thousand, six hundred forty-two".