74028139240 has 64 divisors (see below), whose sum is σ = 186616431360. Its totient is φ = 26191768320.

The previous prime is 74028139223. The next prime is 74028139243. The reversal of 74028139240 is 4293182047.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 74028139193 and 74028139202.

It is not an unprimeable number, because it can be changed into a prime (74028139243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2257312 + ... + 2289871.

It is an arithmetic number, because the mean of its divisors is an integer number (2915881740).

Almost surely, 2^74028139240 is an apocalyptic number.

It is an amenable number.

74028139240 is an abundant number, since it is smaller than the sum of its proper divisors (112588292120).

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

74028139240 is a wasteful number, since it uses less digits than its factorization.

74028139240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4547242 (or 4547238 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 74028139240 in words is "seventy-four billion, twenty-eight million, one hundred thirty-nine thousand, two hundred forty".