73506380 has 24 divisors (see below), whose sum is σ = 154820400. Its totient is φ = 29315520.

The previous prime is 73506379. The next prime is 73506409. The reversal of 73506380 is 8360537.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1715 + ... + 12245.

It is an arithmetic number, because the mean of its divisors is an integer number (6450850).

Almost surely, 2^73506380 is an apocalyptic number.

It is an amenable number.

73506380 is an abundant number, since it is smaller than the sum of its proper divisors (81314020).

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

73506380 is a wasteful number, since it uses less digits than its factorization.

73506380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10889 (or 10887 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 73506380 is about 8573.5861808231. The cubic root of 73506380 is about 418.8980562077.

The spelling of 73506380 in words is "seventy-three million, five hundred six thousand, three hundred eighty".