40782280 has 64 divisors (see below), whose sum is σ = 114410880. Its totient is φ = 12710400.

The previous prime is 40782271. The next prime is 40782307. The reversal of 40782280 is 8228704.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3541 + ... + 9700.

It is an arithmetic number, because the mean of its divisors is an integer number (1787670).

Almost surely, 2^40782280 is an apocalyptic number.

40782280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40782280 is an abundant number, since it is smaller than the sum of its proper divisors (73628600).

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

40782280 is a wasteful number, since it uses less digits than its factorization.

40782280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13270 (or 13266 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 40782280 is about 6386.1005316233. The cubic root of 40782280 is about 344.2102779626.

The spelling of 40782280 in words is "forty million, seven hundred eighty-two thousand, two hundred eighty".