28890054 has 32 divisors (see below), whose sum is σ = 65571840. Its totient is φ = 9424296.

The previous prime is 28890053. The next prime is 28890067. The reversal of 28890054 is 45009882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28890053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3154 + ... + 8229.

It is an arithmetic number, because the mean of its divisors is an integer number (2049120).

Almost surely, 2^28890054 is an apocalyptic number.

28890054 is an abundant number, since it is smaller than the sum of its proper divisors (36681786).

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

28890054 is a wasteful number, since it uses less digits than its factorization.

28890054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11441 (or 11435 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28890054 is about 5374.9468834585. The cubic root of 28890054 is about 306.8429277101.

The spelling of 28890054 in words is "twenty-eight million, eight hundred ninety thousand, fifty-four".