28455030 has 32 divisors (see below), whose sum is σ = 75880800. Its totient is φ = 7587936.

The previous prime is 28455029. The next prime is 28455043. The reversal of 28455030 is 3055482.

28455030 is a `hidden beast` number, since 2 + 84 + 550 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 28454985 and 28455003.

It is a congruent number.

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, 52425 + ... + 52964.

It is an arithmetic number, because the mean of its divisors is an integer number (2371275).

Almost surely, 2^28455030 is an apocalyptic number.

28455030 is an abundant number, since it is smaller than the sum of its proper divisors (47425770).

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

28455030 is a wasteful number, since it uses less digits than its factorization.

28455030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105405 (or 105399 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 28455030 is about 5334.3256368542. The cubic root of 28455030 is about 305.2949936393.

It can be divided in two parts, 2845 and 5030, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 28455030 in words is "twenty-eight million, four hundred fifty-five thousand, thirty".