28290964 has 24 divisors (see below), whose sum is σ = 53925480. Its totient is φ = 12908544.

The previous prime is 28290961. The next prime is 28290967. The reversal of 28290964 is 46909282.

It is an interprime number because it is at equal distance from previous prime (28290961) and next prime (28290967).

It can be written as a sum of positive squares in 4 ways, for example, as 94864 + 28196100 = 308^2 + 5310^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28290961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1572 + ... + 7684.

It is an arithmetic number, because the mean of its divisors is an integer number (2246895).

Almost surely, 2^28290964 is an apocalyptic number.

It is an amenable number.

28290964 is a deficient number, since it is larger than the sum of its proper divisors (25634516).

28290964 is a wasteful number, since it uses less digits than its factorization.

28290964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6219 (or 6217 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 28290964 is about 5318.9250793746. The cubic root of 28290964 is about 304.7071057242.

The spelling of 28290964 in words is "twenty-eight million, two hundred ninety thousand, nine hundred sixty-four".