73609380 has 144 divisors (see below), whose sum is σ = 243996480. Its totient is φ = 17853696.

The previous prime is 73609373. The next prime is 73609411. The reversal of 73609380 is 8390637.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 194031 + ... + 194409.

It is an arithmetic number, because the mean of its divisors is an integer number (1694420).

Almost surely, 2^73609380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73609380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121998240).

73609380 is an abundant number, since it is smaller than the sum of its proper divisors (170387100).

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

73609380 is a wasteful number, since it uses less digits than its factorization.

73609380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 73609380 is about 8579.5908993378. The cubic root of 73609380 is about 419.0936236429.

The spelling of 73609380 in words is "seventy-three million, six hundred nine thousand, three hundred eighty".