75678928 has 20 divisors (see below), whose sum is σ = 157907428. Its totient is φ = 34928640.

The previous prime is 75678923. The next prime is 75678931. The reversal of 75678928 is 82987657.

It can be written as a sum of positive squares in 2 ways, for example, as 5253264 + 70425664 = 2292^2 + 8392^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75678923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181713 + ... + 182128.

Almost surely, 2^75678928 is an apocalyptic number.

It is an amenable number.

75678928 is an abundant number, since it is smaller than the sum of its proper divisors (82228500).

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

75678928 is a wasteful number, since it uses less digits than its factorization.

75678928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363862 (or 363856 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 52.

The square root of 75678928 is about 8699.3636548888. The cubic root of 75678928 is about 422.9850233246.

The spelling of 75678928 in words is "seventy-five million, six hundred seventy-eight thousand, nine hundred twenty-eight".