75749232 has 80 divisors (see below), whose sum is σ = 212048928. Its totient is φ = 23162880.

The previous prime is 75749209. The next prime is 75749237. The reversal of 75749232 is 23294757.

It is a super-2 number, since 2×75749232² = 11475892297179648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75749237) 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 15 ways as a sum of consecutive naturals, for example, 145132 + ... + 145652.

Almost surely, 2^75749232 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 75749232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106024464).

75749232 is an abundant number, since it is smaller than the sum of its proper divisors (136299696).

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

75749232 is a wasteful number, since it uses less digits than its factorization.

75749232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 772 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 75749232 is about 8703.4034722056. The cubic root of 75749232 is about 423.1159639361.

The spelling of 75749232 in words is "seventy-five million, seven hundred forty-nine thousand, two hundred thirty-two".