28506254 has 8 divisors (see below), whose sum is σ = 48867888. Its totient is φ = 12216960.

The previous prime is 28506253. The next prime is 28506277. The reversal of 28506254 is 45260582.

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

It is a super-3 number, since 3×28506254³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 28506254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28506253) 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, 1018067 + ... + 1018094.

It is an arithmetic number, because the mean of its divisors is an integer number (6108486).

Almost surely, 2^28506254 is an apocalyptic number.

28506254 is a deficient number, since it is larger than the sum of its proper divisors (20361634).

28506254 is a wasteful number, since it uses less digits than its factorization.

28506254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036170.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 28506254 is about 5339.1248346522. The cubic root of 28506254 is about 305.4780785065.

The spelling of 28506254 in words is "twenty-eight million, five hundred six thousand, two hundred fifty-four".