74591040 has 56 divisors (see below), whose sum is σ = 236829600. Its totient is φ = 19890688.

The previous prime is 74591003. The next prime is 74591057. The reversal of 74591040 is 4019547.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 74590989 and 74591007.

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, 37890 + ... + 39809.

It is an arithmetic number, because the mean of its divisors is an integer number (4229100).

Almost surely, 2^74591040 is an apocalyptic number.

It is an amenable number.

74591040 is an abundant number, since it is smaller than the sum of its proper divisors (162238560).

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

74591040 is a wasteful number, since it uses less digits than its factorization.

74591040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77719 (or 77709 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 74591040 is about 8636.6104462341. The cubic root of 74591040 is about 420.9484235972.

The spelling of 74591040 in words is "seventy-four million, five hundred ninety-one thousand, forty".