73455140 has 48 divisors (see below), whose sum is σ = 177145920. Its totient is φ = 25303680.

The previous prime is 73455139. The next prime is 73455143. The reversal of 73455140 is 4155437.

It is not an unprimeable number, because it can be changed into a prime (73455143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4607 + ... + 12966.

It is an arithmetic number, because the mean of its divisors is an integer number (3690540).

Almost surely, 2^73455140 is an apocalyptic number.

It is an amenable number.

73455140 is an abundant number, since it is smaller than the sum of its proper divisors (103690780).

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

73455140 is a wasteful number, since it uses less digits than its factorization.

73455140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17612 (or 17610 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 73455140 is about 8570.5974120828. The cubic root of 73455140 is about 418.8006981017.

The spelling of 73455140 in words is "seventy-three million, four hundred fifty-five thousand, one hundred forty".