28629885 has 8 divisors (see below), whose sum is σ = 45807840. Its totient is φ = 15269264.

The previous prime is 28629877. The next prime is 28629947. The reversal of 28629885 is 58892682.

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

It is a cyclic number.

It is not a de Polignac number, because 28629885 - 2³ = 28629877 is a prime.

It is a super-2 number, since 2×28629885² = 1639340630226450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954315 + ... + 954344.

It is an arithmetic number, because the mean of its divisors is an integer number (5725980).

Almost surely, 2^28629885 is an apocalyptic number.

It is an amenable number.

28629885 is a deficient number, since it is larger than the sum of its proper divisors (17177955).

28629885 is a wasteful number, since it uses less digits than its factorization.

28629885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908667.

The product of its digits is 552960, while the sum is 48.

The square root of 28629885 is about 5350.6901424022. The cubic root of 28629885 is about 305.9190588601.

The spelling of 28629885 in words is "twenty-eight million, six hundred twenty-nine thousand, eight hundred eighty-five".