28529998 has 8 divisors (see below), whose sum is σ = 48908592. Its totient is φ = 12227136.

The previous prime is 28529989. The next prime is 28530017. The reversal of 28529998 is 89992582.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018915 + ... + 1018942.

It is an arithmetic number, because the mean of its divisors is an integer number (6113574).

Almost surely, 2^28529998 is an apocalyptic number.

28529998 is a deficient number, since it is larger than the sum of its proper divisors (20378594).

28529998 is a wasteful number, since it uses less digits than its factorization.

28529998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037866.

The product of its digits is 933120, while the sum is 52.

The square root of 28529998 is about 5341.3479572108. The cubic root of 28529998 is about 305.5628699418.

The spelling of 28529998 in words is "twenty-eight million, five hundred twenty-nine thousand, nine hundred ninety-eight".