28741938 has 16 divisors (see below), whose sum is σ = 58212480. Its totient is φ = 9459216.

The previous prime is 28741913. The next prime is 28741981. The reversal of 28741938 is 83914782.

It is a self number, because there is not a number n which added to its sum of digits gives 28741938.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29845 + ... + 30792.

It is an arithmetic number, because the mean of its divisors is an integer number (3638280).

Almost surely, 2^28741938 is an apocalyptic number.

28741938 is an abundant number, since it is smaller than the sum of its proper divisors (29470542).

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

28741938 is a wasteful number, since it uses less digits than its factorization.

28741938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60721.

The product of its digits is 96768, while the sum is 42.

The square root of 28741938 is about 5361.1508092946. The cubic root of 28741938 is about 306.3176461425.

The spelling of 28741938 in words is "twenty-eight million, seven hundred forty-one thousand, nine hundred thirty-eight".