74024640 has 84 divisors (see below), whose sum is σ = 254623824. Its totient is φ = 19739136.

The previous prime is 74024611. The next prime is 74024651. The reversal of 74024640 is 4642047.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9972 + ... + 15731.

It is an arithmetic number, because the mean of its divisors is an integer number (3031236).

Almost surely, 2^74024640 is an apocalyptic number.

It is an amenable number.

74024640 is an abundant number, since it is smaller than the sum of its proper divisors (180599184).

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

74024640 is a wasteful number, since it uses less digits than its factorization.

74024640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25726 (or 25713 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 74024640 is about 8603.7573187532. The cubic root of 74024640 is about 419.8802379622.

Adding to 74024640 its reverse (4642047), we get a palindrome (78666687).

The spelling of 74024640 in words is "seventy-four million, twenty-four thousand, six hundred forty".