74323830 has 128 divisors (see below), whose sum is σ = 218972160. Its totient is φ = 15759360.

The previous prime is 74323819. The next prime is 74323853. The reversal of 74323830 is 3832347.

74323830 = T₁ + T₂ + ... + T₇₆₃.

74323830 is a nontrivial binomial coefficient, being equal to C(765, 3).

It is a Harshad number since it is a multiple of its sum of digits (30).

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is the 763-rd tetrahedral number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 389035 + ... + 389225.

It is an arithmetic number, because the mean of its divisors is an integer number (1710720).

Almost surely, 2^74323830 is an apocalyptic number.

74323830 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 74323830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109486080).

74323830 is an abundant number, since it is smaller than the sum of its proper divisors (144648330).

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

74323830 is a wasteful number, since it uses less digits than its factorization.

74323830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 74323830 is about 8621.1269564947. The cubic root of 74323830 is about 420.4451629205.

The spelling of 74323830 in words is "seventy-four million, three hundred twenty-three thousand, eight hundred thirty".