28699458 has 16 divisors (see below), whose sum is σ = 57451680. Its totient is φ = 9557696.

The previous prime is 28699409. The next prime is 28699471. The reversal of 28699458 is 85499682.

It is a self number, because there is not a number n which added to its sum of digits gives 28699458.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10666 + ... + 13082.

It is an arithmetic number, because the mean of its divisors is an integer number (3590730).

Almost surely, 2^28699458 is an apocalyptic number.

28699458 is an abundant number, since it is smaller than the sum of its proper divisors (28752222).

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

28699458 is a wasteful number, since it uses less digits than its factorization.

28699458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4401.

The product of its digits is 1244160, while the sum is 51.

The square root of 28699458 is about 5357.1875083853. The cubic root of 28699458 is about 306.1666613162.

The spelling of 28699458 in words is "twenty-eight million, six hundred ninety-nine thousand, four hundred fifty-eight".