74373440 has 28 divisors (see below), whose sum is σ = 177102516. Its totient is φ = 29749248.

The previous prime is 74373413. The next prime is 74373449. The reversal of 74373440 is 4437347.

It can be written as a sum of positive squares in 2 ways, for example, as 26708224 + 47665216 = 5168^2 + 6904^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 74373397 and 74373406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74373449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115889 + ... + 116528.

Almost surely, 2^74373440 is an apocalyptic number.

It is an amenable number.

74373440 is an abundant number, since it is smaller than the sum of its proper divisors (102729076).

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

74373440 is a wasteful number, since it uses less digits than its factorization.

74373440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232434 (or 232424 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 32.

The square root of 74373440 is about 8624.0037105743. The cubic root of 74373440 is about 420.5386889825.

The spelling of 74373440 in words is "seventy-four million, three hundred seventy-three thousand, four hundred forty".