74783430 has 96 divisors (see below), whose sum is σ = 207174240. Its totient is φ = 18662400.

The previous prime is 74783417. The next prime is 74783437. The reversal of 74783430 is 3438747.

It is a super-2 number, since 2×74783430² = 11185122805129800, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74783437) 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 47 ways as a sum of consecutive naturals, for example, 172494 + ... + 172926.

It is an arithmetic number, because the mean of its divisors is an integer number (2158065).

Almost surely, 2^74783430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74783430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103587120).

74783430 is an abundant number, since it is smaller than the sum of its proper divisors (132390810).

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

74783430 is a wasteful number, since it uses less digits than its factorization.

74783430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 74783430 is about 8647.7413236058. The cubic root of 74783430 is about 421.3100252878.

The spelling of 74783430 in words is "seventy-four million, seven hundred eighty-three thousand, four hundred thirty".