74273904 has 60 divisors (see below), whose sum is σ = 210527200. Its totient is φ = 24440832.

The previous prime is 74273897. The next prime is 74273909. The reversal of 74273904 is 40937247.

It is a super-2 number, since 2×74273904² = 11033225630802432, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74273909) 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, 8112 + ... + 14640.

Almost surely, 2^74273904 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 74273904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105263600).

74273904 is an abundant number, since it is smaller than the sum of its proper divisors (136253296).

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

74273904 is a wasteful number, since it uses less digits than its factorization.

74273904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6622 (or 6613 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 74273904 is about 8618.2309089511. The cubic root of 74273904 is about 420.3509991011.

The spelling of 74273904 in words is "seventy-four million, two hundred seventy-three thousand, nine hundred four".