40068280 has 48 divisors (see below), whose sum is σ = 104877720. Its totient is φ = 13737024.

The previous prime is 40068263. The next prime is 40068293. The reversal of 40068280 is 8286004.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8262 + ... + 12181.

Almost surely, 2^40068280 is an apocalyptic number.

40068280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40068280 is an abundant number, since it is smaller than the sum of its proper divisors (64809440).

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

40068280 is a wasteful number, since it uses less digits than its factorization.

40068280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20468 (or 20457 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 40068280 is about 6329.9510266668. The cubic root of 40068280 is about 342.1896739783.

The spelling of 40068280 in words is "forty million, sixty-eight thousand, two hundred eighty".