73473720 has 64 divisors (see below), whose sum is σ = 227543040. Its totient is φ = 18960000.

The previous prime is 73473709. The next prime is 73473727. The reversal of 73473720 is 2737437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73473727) 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, 6156 + ... + 13595.

It is an arithmetic number, because the mean of its divisors is an integer number (3555360).

Almost surely, 2^73473720 is an apocalyptic number.

It is an amenable number.

73473720 is an abundant number, since it is smaller than the sum of its proper divisors (154069320).

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

73473720 is a wasteful number, since it uses less digits than its factorization.

73473720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19796 (or 19792 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 33.

The square root of 73473720 is about 8571.6812819890. The cubic root of 73473720 is about 418.8360060960.

The spelling of 73473720 in words is "seventy-three million, four hundred seventy-three thousand, seven hundred twenty".