28262380 has 24 divisors (see below), whose sum is σ = 59476032. Its totient is φ = 11281152.

The previous prime is 28262371. The next prime is 28262401. The reversal of 28262380 is 8326282.

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, 10669 + ... + 13051.

It is an arithmetic number, because the mean of its divisors is an integer number (2478168).

Almost surely, 2^28262380 is an apocalyptic number.

28262380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28262380 is an abundant number, since it is smaller than the sum of its proper divisors (31213652).

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

28262380 is a wasteful number, since it uses less digits than its factorization.

28262380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985 (or 2983 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28262380 is about 5316.2373912383. The cubic root of 28262380 is about 304.6044500626.

The spelling of 28262380 in words is "twenty-eight million, two hundred sixty-two thousand, three hundred eighty".