74012730 has 128 divisors (see below), whose sum is σ = 209018880. Its totient is φ = 16573440.

The previous prime is 74012723. The next prime is 74012737. The reversal of 74012730 is 3721047.

It is an interprime number because it is at equal distance from previous prime (74012723) and next prime (74012737).

It is a self number, because there is not a number n which added to its sum of digits gives 74012730.

It is not an unprimeable number, because it can be changed into a prime (74012737) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 443107 + ... + 443273.

It is an arithmetic number, because the mean of its divisors is an integer number (1632960).

Almost surely, 2^74012730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74012730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104509440).

74012730 is an abundant number, since it is smaller than the sum of its proper divisors (135006150).

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

74012730 is a wasteful number, since it uses less digits than its factorization.

74012730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 74012730 is about 8603.0651514446. The cubic root of 74012730 is about 419.8577182451.

Adding to 74012730 its reverse (3721047), we get a palindrome (77733777).

The spelling of 74012730 in words is "seventy-four million, twelve thousand, seven hundred thirty".