28682040 has 32 divisors (see below), whose sum is σ = 86046480. Its totient is φ = 7648512.

The previous prime is 28682033. The next prime is 28682047. The reversal of 28682040 is 4028682.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28682033) and next prime (28682047).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 28681989 and 28682007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28682047) 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, 119389 + ... + 119628.

Almost surely, 2^28682040 is an apocalyptic number.

28682040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28682040 is an abundant number, since it is smaller than the sum of its proper divisors (57364440).

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

28682040 is a wasteful number, since it uses less digits than its factorization.

28682040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239031 (or 239027 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 28682040 is about 5355.5615952018. The cubic root of 28682040 is about 306.1047102030.

The spelling of 28682040 in words is "twenty-eight million, six hundred eighty-two thousand, forty".