28311742 has 8 divisors (see below), whose sum is σ = 43837632. Its totient is φ = 13699200.

The previous prime is 28311737. The next prime is 28311757. The reversal of 28311742 is 24711382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28311742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228259 + ... + 228382.

It is an arithmetic number, because the mean of its divisors is an integer number (5479704).

Almost surely, 2^28311742 is an apocalyptic number.

28311742 is a deficient number, since it is larger than the sum of its proper divisors (15525890).

28311742 is a wasteful number, since it uses less digits than its factorization.

28311742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456674.

The product of its digits is 2688, while the sum is 28.

The square root of 28311742 is about 5320.8779350780. The cubic root of 28311742 is about 304.7816837757.

The spelling of 28311742 in words is "twenty-eight million, three hundred eleven thousand, seven hundred forty-two".