28254906 has 20 divisors (see below), whose sum is σ = 63312282. Its totient is φ = 9418248.

The previous prime is 28254893. The next prime is 28254907. The reversal of 28254906 is 60945282.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 9979281 = 4275^2 + 3159^2 .

It is not an unprimeable number, because it can be changed into a prime (28254907) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 87045 + ... + 87368.

Almost surely, 2^28254906 is an apocalyptic number.

28254906 is an abundant number, since it is smaller than the sum of its proper divisors (35057376).

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

28254906 is a wasteful number, since it uses less digits than its factorization.

28254906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174427 (or 174418 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28254906 is about 5315.5344039899. The cubic root of 28254906 is about 304.5775967642.

The spelling of 28254906 in words is "twenty-eight million, two hundred fifty-four thousand, nine hundred six".