73989740 has 24 divisors (see below), whose sum is σ = 169504272. Its totient is φ = 26905280.

The previous prime is 73989737. The next prime is 73989761. The reversal of 73989740 is 4798937.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167939 + ... + 168378.

It is an arithmetic number, because the mean of its divisors is an integer number (7062678).

Almost surely, 2^73989740 is an apocalyptic number.

It is an amenable number.

73989740 is an abundant number, since it is smaller than the sum of its proper divisors (95514532).

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

73989740 is a wasteful number, since it uses less digits than its factorization.

73989740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336337 (or 336335 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 73989740 is about 8601.7288959836. The cubic root of 73989740 is about 419.8142413615.

It can be divided in two parts, 739897 and 40, that added together give a palindrome (739937).

The spelling of 73989740 in words is "seventy-three million, nine hundred eighty-nine thousand, seven hundred forty".