73145480 has 16 divisors (see below), whose sum is σ = 164577420. Its totient is φ = 29258176.

The previous prime is 73145477. The next prime is 73145503. The reversal of 73145480 is 8454137.

It can be written as a sum of positive squares in 2 ways, for example, as 68591524 + 4553956 = 8282^2 + 2134^2 .

It is a super-2 number, since 2×73145480² = 10700522488860800, which contains 22 as substring.

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, 914279 + ... + 914358.

Almost surely, 2^73145480 is an apocalyptic number.

It is an amenable number.

73145480 is an abundant number, since it is smaller than the sum of its proper divisors (91431940).

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

73145480 is a wasteful number, since it uses less digits than its factorization.

73145480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828648 (or 1828644 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 73145480 is about 8552.5130809605. The cubic root of 73145480 is about 418.2113656730.

The spelling of 73145480 in words is "seventy-three million, one hundred forty-five thousand, four hundred eighty".