73404045 has 144 divisors (see below), whose sum is σ = 162083376. Its totient is φ = 30412800.

The previous prime is 73404043. The next prime is 73404047. The reversal of 73404045 is 54040437.

It is an interprime number because it is at equal distance from previous prime (73404043) and next prime (73404047).

It can be written as a sum of positive squares in 8 ways, for example, as 12236004 + 61168041 = 3498^2 + 7821^2 .

It is not a de Polignac number, because 73404045 - 2¹ = 73404043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73404043) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1203315 + ... + 1203375.

It is an arithmetic number, because the mean of its divisors is an integer number (1125579).

Almost surely, 2^73404045 is an apocalyptic number.

It is an amenable number.

73404045 is an abundant number, since it is smaller than the sum of its proper divisors (88679331).

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

73404045 is a wasteful number, since it uses less digits than its factorization.

73404045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 73404045 is about 8567.6160628263. The cubic root of 73404045 is about 418.7035704073.

The spelling of 73404045 in words is "seventy-three million, four hundred four thousand, forty-five".