72434574 has 80 divisors (see below), whose sum is σ = 173281680. Its totient is φ = 22550400.

The previous prime is 72434573. The next prime is 72434587. The reversal of 72434574 is 47543427.

It is a super-2 number, since 2×72434574² = 10493535021122952, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72434573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 310762 + ... + 310994.

It is an arithmetic number, because the mean of its divisors is an integer number (2166021).

Almost surely, 2^72434574 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72434574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86640840).

72434574 is an abundant number, since it is smaller than the sum of its proper divisors (100847106).

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

72434574 is a wasteful number, since it uses less digits than its factorization.

72434574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 358 counting only the distinct ones).

The product of its digits is 94080, while the sum is 36.

The square root of 72434574 is about 8510.8503687939. The cubic root of 72434574 is about 416.8520773405.

The spelling of 72434574 in words is "seventy-two million, four hundred thirty-four thousand, five hundred seventy-four".