28857662 has 4 divisors (see below), whose sum is σ = 43286496. Its totient is φ = 14428830.

The previous prime is 28857643. The next prime is 28857701. The reversal of 28857662 is 26675882.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28857662² = 1665529312212488, which contains 22 as substring.

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, 7214414 + ... + 7214417.

It is an arithmetic number, because the mean of its divisors is an integer number (10821624).

Almost surely, 2^28857662 is an apocalyptic number.

28857662 is a deficient number, since it is larger than the sum of its proper divisors (14428834).

28857662 is a wasteful number, since it uses less digits than its factorization.

28857662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14428833.

The product of its digits is 322560, while the sum is 44.

The square root of 28857662 is about 5371.9327992818. The cubic root of 28857662 is about 306.7282057240.

The spelling of 28857662 in words is "twenty-eight million, eight hundred fifty-seven thousand, six hundred sixty-two".