28277282 has 32 divisors (see below), whose sum is σ = 49550400. Its totient is φ = 11966400.

The previous prime is 28277269. The next prime is 28277297.

28277282 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24944 + ... + 26052.

It is an arithmetic number, because the mean of its divisors is an integer number (1548450).

Almost surely, 2^28277282 is an apocalyptic number.

28277282 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28277282 is a deficient number, since it is larger than the sum of its proper divisors (21273118).

28277282 is a wasteful number, since it uses less digits than its factorization.

28277282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202.

The product of its digits is 50176, while the sum is 38.

The square root of 28277282 is about 5317.6387617062. The cubic root of 28277282 is about 304.6579772596.

The spelling of 28277282 in words is "twenty-eight million, two hundred seventy-seven thousand, two hundred eighty-two".