28244038 has 32 divisors (see below), whose sum is σ = 46891008. Its totient is φ = 12700800.

The previous prime is 28244033. The next prime is 28244053. The reversal of 28244038 is 83044282.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28244033) 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, 133753 + ... + 133963.

It is an arithmetic number, because the mean of its divisors is an integer number (1465344).

Almost surely, 2^28244038 is an apocalyptic number.

28244038 is a deficient number, since it is larger than the sum of its proper divisors (18646970).

28244038 is a wasteful number, since it uses less digits than its factorization.

28244038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388.

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 28244038 is about 5314.5120189910. The cubic root of 28244038 is about 304.5385407288.

The spelling of 28244038 in words is "twenty-eight million, two hundred forty-four thousand, thirty-eight".