75347424 has 72 divisors (see below), whose sum is σ = 215134920. Its totient is φ = 25014528.

The previous prime is 75347411. The next prime is 75347473. The reversal of 75347424 is 42474357.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114007 + ... + 114665.

It is an arithmetic number, because the mean of its divisors is an integer number (2987985).

Almost surely, 2^75347424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75347424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107567460).

75347424 is an abundant number, since it is smaller than the sum of its proper divisors (139787496).

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

75347424 is a wasteful number, since it uses less digits than its factorization.

75347424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 1061 counting only the distinct ones).

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

The square root of 75347424 is about 8680.2893960973. The cubic root of 75347424 is about 422.3665047476.

The spelling of 75347424 in words is "seventy-five million, three hundred forty-seven thousand, four hundred twenty-four".