28316040 has 32 divisors (see below), whose sum is σ = 84948480. Its totient is φ = 7550912.

The previous prime is 28316027. The next prime is 28316053. The reversal of 28316040 is 4061382.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28316027) and next prime (28316053).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 28316040.

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, 117864 + ... + 118103.

It is an arithmetic number, because the mean of its divisors is an integer number (2654640).

Almost surely, 2^28316040 is an apocalyptic number.

28316040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28316040 is an abundant number, since it is smaller than the sum of its proper divisors (56632440).

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

28316040 is a wasteful number, since it uses less digits than its factorization.

28316040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235981 (or 235977 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 28316040 is about 5321.2818004688. The cubic root of 28316040 is about 304.7971059445.

The spelling of 28316040 in words is "twenty-eight million, three hundred sixteen thousand, forty".