75428023 has 4 divisors (see below), whose sum is σ = 82285128. Its totient is φ = 68570920.

The previous prime is 75428011. The next prime is 75428029. The reversal of 75428023 is 32082457.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32082457 = 11 ⋅2916587.

It is not a de Polignac number, because 75428023 - 2²¹ = 73330871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75428029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3428536 + ... + 3428557.

It is an arithmetic number, because the mean of its divisors is an integer number (20571282).

Almost surely, 2^75428023 is an apocalyptic number.

75428023 is a deficient number, since it is larger than the sum of its proper divisors (6857105).

75428023 is a wasteful number, since it uses less digits than its factorization.

75428023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6857104.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 75428023 is about 8684.9307999546. The cubic root of 75428023 is about 422.5170526362.

The spelling of 75428023 in words is "seventy-five million, four hundred twenty-eight thousand, twenty-three".