28901427 has 8 divisors (see below), whose sum is σ = 38585040. Its totient is φ = 19242720.

The previous prime is 28901419. The next prime is 28901497. The reversal of 28901427 is 72410982.

It is a happy number.

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

It is not a de Polignac number, because 28901427 - 2³ = 28901419 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28901417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3324 + ... + 8297.

It is an arithmetic number, because the mean of its divisors is an integer number (4823130).

Almost surely, 2^28901427 is an apocalyptic number.

28901427 is a deficient number, since it is larger than the sum of its proper divisors (9683613).

28901427 is a wasteful number, since it uses less digits than its factorization.

28901427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12453.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 28901427 is about 5376.0047433015. The cubic root of 28901427 is about 306.8831868570.

The spelling of 28901427 in words is "twenty-eight million, nine hundred one thousand, four hundred twenty-seven".