28999942 has 24 divisors (see below), whose sum is σ = 46820160. Its totient is φ = 13441680.

The previous prime is 28999939. The next prime is 28999967. The reversal of 28999942 is 24999982.

It is a self number, because there is not a number n which added to its sum of digits gives 28999942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228283 + ... + 228409.

It is an arithmetic number, because the mean of its divisors is an integer number (1950840).

Almost surely, 2^28999942 is an apocalyptic number.

28999942 is a deficient number, since it is larger than the sum of its proper divisors (17820218).

28999942 is a wasteful number, since it uses less digits than its factorization.

28999942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 189 counting only the distinct ones).

The product of its digits is 839808, while the sum is 52.

The square root of 28999942 is about 5385.1594219670. The cubic root of 28999942 is about 307.2314777473.

The spelling of 28999942 in words is "twenty-eight million, nine hundred ninety-nine thousand, nine hundred forty-two".