74972430 has 96 divisors (see below), whose sum is σ = 211891680. Its totient is φ = 18282240.

The previous prime is 74972407. The next prime is 74972437. The reversal of 74972430 is 3427947.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74972437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 162400 + ... + 162860.

It is an arithmetic number, because the mean of its divisors is an integer number (2207205).

Almost surely, 2^74972430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74972430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105945840).

74972430 is an abundant number, since it is smaller than the sum of its proper divisors (136919250).

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

74972430 is a wasteful number, since it uses less digits than its factorization.

74972430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 74972430 is about 8658.6621368431. The cubic root of 74972430 is about 421.6646520098.

The spelling of 74972430 in words is "seventy-four million, nine hundred seventy-two thousand, four hundred thirty".