40280828 has 24 divisors (see below), whose sum is σ = 81349632. Its totient is φ = 17094384.

The previous prime is 40280791. The next prime is 40280831. The reversal of 40280828 is 82808204.

It is a junction number, because it is equal to n+sod(n) for n = 40280794 and 40280803.

It is a congruent number.

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, 4100 + ... + 9867.

It is an arithmetic number, because the mean of its divisors is an integer number (3389568).

Almost surely, 2^40280828 is an apocalyptic number.

It is an amenable number.

40280828 is an abundant number, since it is smaller than the sum of its proper divisors (41068804).

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

40280828 is a wasteful number, since it uses less digits than its factorization.

40280828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14081 (or 14079 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 40280828 is about 6346.7178919501. The cubic root of 40280828 is about 342.7936721463.

The spelling of 40280828 in words is "forty million, two hundred eighty thousand, eight hundred twenty-eight".