28693776 has 40 divisors (see below), whose sum is σ = 75530880. Its totient is φ = 9383296.

The previous prime is 28693757. The next prime is 28693787. The reversal of 28693776 is 67739682.

It is a super-2 number, since 2×28693776² = 1646665562276352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3096 + ... + 8183.

It is an arithmetic number, because the mean of its divisors is an integer number (1888272).

Almost surely, 2^28693776 is an apocalyptic number.

It is an amenable number.

28693776 is an abundant number, since it is smaller than the sum of its proper divisors (46837104).

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

28693776 is a wasteful number, since it uses less digits than its factorization.

28693776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11343 (or 11337 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The square root of 28693776 is about 5356.6571665545. The cubic root of 28693776 is about 306.1464547350.

The spelling of 28693776 in words is "twenty-eight million, six hundred ninety-three thousand, seven hundred seventy-six".