28970526 has 16 divisors (see below), whose sum is σ = 62398224. Its totient is φ = 8913984.

The previous prime is 28970467. The next prime is 28970531. The reversal of 28970526 is 62507982.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 185631 + ... + 185786.

It is an arithmetic number, because the mean of its divisors is an integer number (3899889).

Almost surely, 2^28970526 is an apocalyptic number.

28970526 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28970526 is an abundant number, since it is smaller than the sum of its proper divisors (33427698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28970526 is a wasteful number, since it uses less digits than its factorization.

28970526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371435.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 28970526 is about 5382.4275192519. The cubic root of 28970526 is about 307.1275628429.

The spelling of 28970526 in words is "twenty-eight million, nine hundred seventy thousand, five hundred twenty-six".