41722640 has 20 divisors (see below), whose sum is σ = 97005324. Its totient is φ = 16689024.

The previous prime is 41722627. The next prime is 41722663. The reversal of 41722640 is 4622714.

It can be written as a sum of positive squares in 2 ways, for example, as 4804864 + 36917776 = 2192^2 + 6076^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260687 + ... + 260846.

Almost surely, 2^41722640 is an apocalyptic number.

41722640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

41722640 is an abundant number, since it is smaller than the sum of its proper divisors (55282684).

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

41722640 is a wasteful number, since it uses less digits than its factorization.

41722640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521546 (or 521540 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 41722640 is about 6459.3064643195. The cubic root of 41722640 is about 346.8358066801.

The spelling of 41722640 in words is "forty-one million, seven hundred twenty-two thousand, six hundred forty".