28370534 has 16 divisors (see below), whose sum is σ = 44912880. Its totient is φ = 13403520.

The previous prime is 28370533. The next prime is 28370543. The reversal of 28370534 is 43507382.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28370534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28370533) by changing a digit.

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, 19082 + ... + 20514.

It is an arithmetic number, because the mean of its divisors is an integer number (2807055).

Almost surely, 2^28370534 is an apocalyptic number.

28370534 is a deficient number, since it is larger than the sum of its proper divisors (16542346).

28370534 is a wasteful number, since it uses less digits than its factorization.

28370534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 28370534 is about 5326.3997221388. The cubic root of 28370534 is about 304.9925072064.

The spelling of 28370534 in words is "twenty-eight million, three hundred seventy thousand, five hundred thirty-four".