74775240 has 48 divisors (see below), whose sum is σ = 243020700. Its totient is φ = 19939968.

The previous prime is 74775229. The next prime is 74775247. The reversal of 74775240 is 4257747.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 71470116 + 3305124 = 8454^2 + 1818^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 74775195 and 74775204.

It is not an unprimeable number, because it can be changed into a prime (74775247) 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, 103495 + ... + 104214.

Almost surely, 2^74775240 is an apocalyptic number.

It is an amenable number.

74775240 is an abundant number, since it is smaller than the sum of its proper divisors (168245460).

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

74775240 is a wasteful number, since it uses less digits than its factorization.

74775240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207726 (or 207719 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 74775240 is about 8647.2677765870. The cubic root of 74775240 is about 421.2946446298.

The spelling of 74775240 in words is "seventy-four million, seven hundred seventy-five thousand, two hundred forty".