28673998 has 16 divisors (see below), whose sum is σ = 43764480. Its totient is φ = 14087736.

The previous prime is 28673993. The next prime is 28674017. The reversal of 28673998 is 89937682.

It is a super-2 number, since 2×28673998² = 1644396322608008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28673993) 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, 54565 + ... + 55087.

It is an arithmetic number, because the mean of its divisors is an integer number (2735280).

Almost surely, 2^28673998 is an apocalyptic number.

28673998 is a deficient number, since it is larger than the sum of its proper divisors (15090482).

28673998 is a wasteful number, since it uses less digits than its factorization.

28673998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951.

The product of its digits is 1306368, while the sum is 52.

The square root of 28673998 is about 5354.8107342837. The cubic root of 28673998 is about 306.0760985213.

The spelling of 28673998 in words is "twenty-eight million, six hundred seventy-three thousand, nine hundred ninety-eight".