73148520 has 32 divisors (see below), whose sum is σ = 219445920. Its totient is φ = 19506240.

The previous prime is 73148513. The next prime is 73148521. The reversal of 73148520 is 2584137.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (73148521) 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, 304666 + ... + 304905.

It is an arithmetic number, because the mean of its divisors is an integer number (6857685).

Almost surely, 2^73148520 is an apocalyptic number.

It is an amenable number.

73148520 is an abundant number, since it is smaller than the sum of its proper divisors (146297400).

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

73148520 is a wasteful number, since it uses less digits than its factorization.

73148520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609585 (or 609581 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 73148520 is about 8552.6908046532. The cubic root of 73148520 is about 418.2171593549.

The spelling of 73148520 in words is "seventy-three million, one hundred forty-eight thousand, five hundred twenty".