28741790 has 64 divisors (see below), whose sum is σ = 65180160. Its totient is φ = 8864640.

The previous prime is 28741771. The next prime is 28741819. The reversal of 28741790 is 9714782.

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 31 ways as a sum of consecutive naturals, for example, 125396 + ... + 125624.

It is an arithmetic number, because the mean of its divisors is an integer number (1018440).

Almost surely, 2^28741790 is an apocalyptic number.

28741790 is an abundant number, since it is smaller than the sum of its proper divisors (36438370).

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

28741790 is a wasteful number, since it uses less digits than its factorization.

28741790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 28741790 is about 5361.1370062702. The cubic root of 28741790 is about 306.3171203709.

It can be divided in two parts, 2874 and 1790, that added together give a palindrome (4664).

The spelling of 28741790 in words is "twenty-eight million, seven hundred forty-one thousand, seven hundred ninety".