28230744 has 32 divisors (see below), whose sum is σ = 74729520. Its totient is φ = 8856576.

The previous prime is 28230731. The next prime is 28230757. The reversal of 28230744 is 44703282.

It is an interprime number because it is at equal distance from previous prime (28230731) and next prime (28230757).

It is a congruent number.

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, 34189 + ... + 35004.

Almost surely, 2^28230744 is an apocalyptic number.

28230744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28230744 is an abundant number, since it is smaller than the sum of its proper divisors (46498776).

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

28230744 is a wasteful number, since it uses less digits than its factorization.

28230744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69219 (or 69215 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 28230744 is about 5313.2611454737. The cubic root of 28230744 is about 304.4907528179.

The spelling of 28230744 in words is "twenty-eight million, two hundred thirty thousand, seven hundred forty-four".