28741538 has 24 divisors (see below), whose sum is σ = 50364972. Its totient is φ = 12265344.

The previous prime is 28741511. The next prime is 28741541. The reversal of 28741538 is 83514782.

It can be written as a sum of positive squares in 2 ways, for example, as 18774889 + 9966649 = 4333^2 + 3157^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30206 + ... + 31142.

Almost surely, 2^28741538 is an apocalyptic number.

28741538 is a deficient number, since it is larger than the sum of its proper divisors (21623434).

28741538 is a wasteful number, since it uses less digits than its factorization.

28741538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266 (or 1259 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 28741538 is about 5361.1135037416. The cubic root of 28741538 is about 306.3162251339.

The spelling of 28741538 in words is "twenty-eight million, seven hundred forty-one thousand, five hundred thirty-eight".