28998951 has 8 divisors (see below), whose sum is σ = 38745984. Its totient is φ = 19292280.

The previous prime is 28998917. The next prime is 28998961. The reversal of 28998951 is 15989982.

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

It is not a de Polignac number, because 28998951 - 2¹⁴ = 28982567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28998894 and 28998903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28998911) 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, 8371 + ... + 11316.

It is an arithmetic number, because the mean of its divisors is an integer number (4843248).

Almost surely, 2^28998951 is an apocalyptic number.

28998951 is a deficient number, since it is larger than the sum of its proper divisors (9747033).

28998951 is a wasteful number, since it uses less digits than its factorization.

28998951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20181.

The product of its digits is 466560, while the sum is 51.

The square root of 28998951 is about 5385.0674090488. The cubic root of 28998951 is about 307.2279780867.

The spelling of 28998951 in words is "twenty-eight million, nine hundred ninety-eight thousand, nine hundred fifty-one".