73075280 has 20 divisors (see below), whose sum is σ = 169900212. Its totient is φ = 29230080.

The previous prime is 73075279. The next prime is 73075291. The reversal of 73075280 is 8257037.

It can be written as a sum of positive squares in 2 ways, for example, as 8690704 + 64384576 = 2948^2 + 8024^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456641 + ... + 456800.

Almost surely, 2^73075280 is an apocalyptic number.

It is an amenable number.

73075280 is an abundant number, since it is smaller than the sum of its proper divisors (96824932).

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

73075280 is a wasteful number, since it uses less digits than its factorization.

73075280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913454 (or 913448 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 73075280 is about 8548.4080389275. The cubic root of 73075280 is about 418.0775326827.

The spelling of 73075280 in words is "seventy-three million, seventy-five thousand, two hundred eighty".