28135052 has 12 divisors (see below), whose sum is σ = 53712456. Its totient is φ = 12788640.

The previous prime is 28135043. The next prime is 28135069. The reversal of 28135052 is 25053182.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319673 + ... + 319760.

It is an arithmetic number, because the mean of its divisors is an integer number (4476038).

Almost surely, 2^28135052 is an apocalyptic number.

28135052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28135052 is a deficient number, since it is larger than the sum of its proper divisors (25577404).

28135052 is a wasteful number, since it uses less digits than its factorization.

28135052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639448 (or 639446 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 28135052 is about 5304.2484858837. The cubic root of 28135052 is about 304.1463255637.

The spelling of 28135052 in words is "twenty-eight million, one hundred thirty-five thousand, fifty-two".