28759390 has 32 divisors (see below), whose sum is σ = 57550176. Its totient is φ = 10258560.

The previous prime is 28759363. The next prime is 28759391. The reversal of 28759390 is 9395782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28759391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3364 + ... + 8296.

It is an arithmetic number, because the mean of its divisors is an integer number (1798443).

Almost surely, 2^28759390 is an apocalyptic number.

28759390 is an abundant number, since it is smaller than the sum of its proper divisors (28790786).

28759390 is a wasteful number, since it uses less digits than its factorization.

28759390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 28759390 is about 5362.7781979120. The cubic root of 28759390 is about 306.3796319178.

The spelling of 28759390 in words is "twenty-eight million, seven hundred fifty-nine thousand, three hundred ninety".