73428072 has 32 divisors (see below), whose sum is σ = 186089280. Its totient is φ = 24140160.

The previous prime is 73428071. The next prime is 73428073. The reversal of 73428072 is 27082437.

It is an interprime number because it is at equal distance from previous prime (73428071) and next prime (73428073).

It is not an unprimeable number, because it can be changed into a prime (73428071) 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, 19204 + ... + 22707.

It is an arithmetic number, because the mean of its divisors is an integer number (5815290).

Almost surely, 2^73428072 is an apocalyptic number.

It is an amenable number.

73428072 is an abundant number, since it is smaller than the sum of its proper divisors (112661208).

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

73428072 is a wasteful number, since it uses less digits than its factorization.

73428072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41993 (or 41989 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 73428072 is about 8569.0181467890. The cubic root of 73428072 is about 418.7492495123.

The spelling of 73428072 in words is "seventy-three million, four hundred twenty-eight thousand, seventy-two".