73149228 has 36 divisors (see below), whose sum is σ = 187140408. Its totient is φ = 24088320.

The previous prime is 73149191. The next prime is 73149229. The reversal of 73149228 is 82294137.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 73149192 and 73149201.

It is not an unprimeable number, because it can be changed into a prime (73149229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9253 + ... + 15228.

Almost surely, 2^73149228 is an apocalyptic number.

It is an amenable number.

73149228 is an abundant number, since it is smaller than the sum of its proper divisors (113991180).

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

73149228 is a wasteful number, since it uses less digits than its factorization.

73149228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24574 (or 24569 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 73149228 is about 8552.7321950357. The cubic root of 73149228 is about 418.2185086499.

The spelling of 73149228 in words is "seventy-three million, one hundred forty-nine thousand, two hundred twenty-eight".