40267281 has 8 divisors (see below), whose sum is σ = 53725824. Its totient is φ = 26826800.

The previous prime is 40267267. The next prime is 40267291. The reversal of 40267281 is 18276204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40267281 - 2²² = 36072977 is a prime.

It is a super-2 number, since 2×40267281² = 3242907838265922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40267231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056 + ... + 9206.

It is an arithmetic number, because the mean of its divisors is an integer number (6715728).

Almost surely, 2^40267281 is an apocalyptic number.

It is an amenable number.

40267281 is a deficient number, since it is larger than the sum of its proper divisors (13458543).

40267281 is a wasteful number, since it uses less digits than its factorization.

40267281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9031.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 40267281 is about 6345.6505576655. The cubic root of 40267281 is about 342.7552390853.

It can be divided in two parts, 402672 and 81, that added together give a triangular number (402753 = T₈₉₇).

The spelling of 40267281 in words is "forty million, two hundred sixty-seven thousand, two hundred eighty-one".