73290945 has 32 divisors (see below), whose sum is σ = 144329472. Its totient is φ = 30926592.

The previous prime is 73290941. The next prime is 73290967. The reversal of 73290945 is 54909237.

It is not a de Polignac number, because 73290945 - 2² = 73290941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (73290941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25482 + ... + 28211.

It is an arithmetic number, because the mean of its divisors is an integer number (4510296).

Almost surely, 2^73290945 is an apocalyptic number.

It is an amenable number.

73290945 is a deficient number, since it is larger than the sum of its proper divisors (71038527).

73290945 is a wasteful number, since it uses less digits than its factorization.

73290945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53721.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 73290945 is about 8561.0130825738. The cubic root of 73290945 is about 418.4884155242.

The spelling of 73290945 in words is "seventy-three million, two hundred ninety thousand, nine hundred forty-five".