75489428 has 12 divisors (see below), whose sum is σ = 150978912. Its totient is φ = 32352600.

The previous prime is 75489419. The next prime is 75489431. The reversal of 75489428 is 82498457.

It is a happy number.

75489428 is an admirable number.

It is a super-3 number, since 3×75489428³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347998 + ... + 1348053.

It is an arithmetic number, because the mean of its divisors is an integer number (12581576).

Almost surely, 2^75489428 is an apocalyptic number.

It is an amenable number.

75489428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

75489428 is a wasteful number, since it uses less digits than its factorization.

75489428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696062 (or 2696060 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 75489428 is about 8688.4652269546. The cubic root of 75489428 is about 422.6316768009.

The spelling of 75489428 in words is "seventy-five million, four hundred eighty-nine thousand, four hundred twenty-eight".