74744380 has 24 divisors (see below), whose sum is σ = 157128048. Its totient is φ = 29866368.

The previous prime is 74744377. The next prime is 74744389. The reversal of 74744380 is 8344747.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74744389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31392 + ... + 33688.

It is an arithmetic number, because the mean of its divisors is an integer number (6547002).

Almost surely, 2^74744380 is an apocalyptic number.

It is an amenable number.

74744380 is an abundant number, since it is smaller than the sum of its proper divisors (82383668).

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

74744380 is a wasteful number, since it uses less digits than its factorization.

74744380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933 (or 3931 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 74744380 is about 8645.4832137944. The cubic root of 74744380 is about 421.2366800697.

The spelling of 74744380 in words is "seventy-four million, seven hundred forty-four thousand, three hundred eighty".