75361428 has 30 divisors (see below), whose sum is σ = 197010506. Its totient is φ = 25120368.

The previous prime is 75361421. The next prime is 75361457. The reversal of 75361428 is 82416357.

It can be written as a sum of positive squares in only one way, i.e., 72795024 + 2566404 = 8532^2 + 1602^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 75361392 and 75361401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75361421) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 115975 + ... + 116622.

Almost surely, 2^75361428 is an apocalyptic number.

It is an amenable number.

75361428 is an abundant number, since it is smaller than the sum of its proper divisors (121649078).

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

75361428 is a wasteful number, since it uses less digits than its factorization.

75361428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232613 (or 232602 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 75361428 is about 8681.0960137531. The cubic root of 75361428 is about 422.3926700045.

The spelling of 75361428 in words is "seventy-five million, three hundred sixty-one thousand, four hundred twenty-eight".