74474540 has 48 divisors (see below), whose sum is σ = 182129472. Its totient is φ = 25049856.

The previous prime is 74474539. The next prime is 74474557. The reversal of 74474540 is 4547447.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 74474540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2402 + ... + 12438.

It is an arithmetic number, because the mean of its divisors is an integer number (3794364).

Almost surely, 2^74474540 is an apocalyptic number.

74474540 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74474540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91064736).

74474540 is an abundant number, since it is smaller than the sum of its proper divisors (107654932).

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

74474540 is a wasteful number, since it uses less digits than its factorization.

74474540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106 (or 10104 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 35.

The square root of 74474540 is about 8629.8632665877. The cubic root of 74474540 is about 420.7291566682.

The spelling of 74474540 in words is "seventy-four million, four hundred seventy-four thousand, five hundred forty".