28457692 has 6 divisors (see below), whose sum is σ = 49800968. Its totient is φ = 14228844.

The previous prime is 28457683. The next prime is 28457707. The reversal of 28457692 is 29675482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3557208 + ... + 3557215.

Almost surely, 2^28457692 is an apocalyptic number.

It is an amenable number.

28457692 is a deficient number, since it is larger than the sum of its proper divisors (21343276).

28457692 is a wasteful number, since it uses less digits than its factorization.

28457692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114427 (or 7114425 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 28457692 is about 5334.5751470947. The cubic root of 28457692 is about 305.3045135722.

The spelling of 28457692 in words is "twenty-eight million, four hundred fifty-seven thousand, six hundred ninety-two".