74543740 has 24 divisors (see below), whose sum is σ = 160361712. Its totient is φ = 29089920.

The previous prime is 74543723. The next prime is 74543761. The reversal of 74543740 is 4734547.

It is a junction number, because it is equal to n+sod(n) for n = 74543696 and 74543705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44634 + ... + 46273.

It is an arithmetic number, because the mean of its divisors is an integer number (6681738).

Almost surely, 2^74543740 is an apocalyptic number.

It is an amenable number.

74543740 is an abundant number, since it is smaller than the sum of its proper divisors (85817972).

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

74543740 is a wasteful number, since it uses less digits than its factorization.

74543740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90957 (or 90955 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 34.

The square root of 74543740 is about 8633.8716691876. The cubic root of 74543740 is about 420.8594268912.

The spelling of 74543740 in words is "seventy-four million, five hundred forty-three thousand, seven hundred forty".