40917280 has 24 divisors (see below), whose sum is σ = 96667452. Its totient is φ = 16366848.

The previous prime is 40917271. The next prime is 40917281. The reversal of 40917280 is 8271904.

It can be written as a sum of positive squares in 2 ways, for example, as 40908816 + 8464 = 6396^2 + 92^2 .

It is not an unprimeable number, because it can be changed into a prime (40917281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127707 + ... + 128026.

Almost surely, 2^40917280 is an apocalyptic number.

40917280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40917280 is an abundant number, since it is smaller than the sum of its proper divisors (55750172).

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

40917280 is a wasteful number, since it uses less digits than its factorization.

40917280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255748 (or 255740 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 40917280 is about 6396.6616293188. The cubic root of 40917280 is about 344.5896682880.

It can be divided in two parts, 409 and 17280, that added together give a square (17689 = 133²).

The spelling of 40917280 in words is "forty million, nine hundred seventeen thousand, two hundred eighty".