28621598 has 4 divisors (see below), whose sum is σ = 42932400. Its totient is φ = 14310798.

The previous prime is 28621589. The next prime is 28621603. The reversal of 28621598 is 89512682.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7155398 + ... + 7155401.

It is an arithmetic number, because the mean of its divisors is an integer number (10733100).

Almost surely, 2^28621598 is an apocalyptic number.

28621598 is a deficient number, since it is larger than the sum of its proper divisors (14310802).

28621598 is a wasteful number, since it uses less digits than its factorization.

28621598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14310801.

The product of its digits is 69120, while the sum is 41.

The square root of 28621598 is about 5349.9157002704. The cubic root of 28621598 is about 305.8895396371.

The spelling of 28621598 in words is "twenty-eight million, six hundred twenty-one thousand, five hundred ninety-eight".