28130254 has 8 divisors (see below), whose sum is σ = 42243048. Its totient is φ = 14049240.

The previous prime is 28130251. The next prime is 28130273. The reversal of 28130254 is 45203182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28130254² = 1582622380209032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28130251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5592 + ... + 9355.

It is an arithmetic number, because the mean of its divisors is an integer number (5280381).

Almost surely, 2^28130254 is an apocalyptic number.

28130254 is a deficient number, since it is larger than the sum of its proper divisors (14112794).

28130254 is a wasteful number, since it uses less digits than its factorization.

28130254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15890.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28130254 is about 5303.7961876377. The cubic root of 28130254 is about 304.1290354229.

The spelling of 28130254 in words is "twenty-eight million, one hundred thirty thousand, two hundred fifty-four".