73976144 has 20 divisors (see below), whose sum is σ = 156359040. Its totient is φ = 33625440.

The previous prime is 73976143. The next prime is 73976171. The reversal of 73976144 is 44167937.

It is a super-2 number, since 2×73976144² = 10944939762217472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73976143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209984 + ... + 210335.

It is an arithmetic number, because the mean of its divisors is an integer number (7817952).

Almost surely, 2^73976144 is an apocalyptic number.

It is an amenable number.

73976144 is an abundant number, since it is smaller than the sum of its proper divisors (82382896).

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

73976144 is a wasteful number, since it uses less digits than its factorization.

73976144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420338 (or 420332 counting only the distinct ones).

The product of its digits is 127008, while the sum is 41.

The square root of 73976144 is about 8600.9385534371. The cubic root of 73976144 is about 419.7885254353.

The spelling of 73976144 in words is "seventy-three million, nine hundred seventy-six thousand, one hundred forty-four".