74934440 has 128 divisors (see below), whose sum is σ = 203212800. Its totient is φ = 24330240.

The previous prime is 74934439. The next prime is 74934443. The reversal of 74934440 is 4443947.

It is a happy number.

It is a super-2 number, since 2×74934440² = 11230340596227200, which contains 22 as substring.

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 74934440.

It is not an unprimeable number, because it can be changed into a prime (74934443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 772472 + ... + 772568.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^74934440 is an apocalyptic number.

74934440 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 74934440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101606400).

74934440 is an abundant number, since it is smaller than the sum of its proper divisors (128278360).

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

74934440 is a wasteful number, since it uses less digits than its factorization.

74934440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 74934440 is about 8656.4681019455. The cubic root of 74934440 is about 421.5934180615.

The spelling of 74934440 in words is "seventy-four million, nine hundred thirty-four thousand, four hundred forty".