28463730 has 32 divisors (see below), whose sum is σ = 70161984. Its totient is φ = 7384896.

The previous prime is 28463723. The next prime is 28463737. The reversal of 28463730 is 3736482.

It is an interprime number because it is at equal distance from previous prime (28463723) and next prime (28463737).

It is a junction number, because it is equal to n+sod(n) for n = 28463691 and 28463700.

It is not an unprimeable number, because it can be changed into a prime (28463737) 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, 11712 + ... + 13931.

It is an arithmetic number, because the mean of its divisors is an integer number (2192562).

Almost surely, 2^28463730 is an apocalyptic number.

28463730 is an abundant number, since it is smaller than the sum of its proper divisors (41698254).

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

28463730 is a wasteful number, since it uses less digits than its factorization.

28463730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25690.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 28463730 is about 5335.1410478075. The cubic root of 28463730 is about 305.3261046684.

The spelling of 28463730 in words is "twenty-eight million, four hundred sixty-three thousand, seven hundred thirty".