40224261 has 32 divisors (see below), whose sum is σ = 70806528. Its totient is φ = 19664640.

The previous prime is 40224257. The next prime is 40224277. The reversal of 40224261 is 16242204.

It is not a de Polignac number, because 40224261 - 2² = 40224257 is a prime.

It is a super-2 number, since 2×40224261² = 3235982345992242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40224211) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1195 + ... + 9048.

It is an arithmetic number, because the mean of its divisors is an integer number (2212704).

Almost surely, 2^40224261 is an apocalyptic number.

It is an amenable number.

40224261 is a deficient number, since it is larger than the sum of its proper divisors (30582267).

40224261 is a wasteful number, since it uses less digits than its factorization.

40224261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10281.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40224261 is about 6342.2599284482. The cubic root of 40224261 is about 342.6331334596.

Adding to 40224261 its reverse (16242204), we get a palindrome (56466465).

The spelling of 40224261 in words is "forty million, two hundred twenty-four thousand, two hundred sixty-one".