40750281 has 24 divisors (see below), whose sum is σ = 69154176. Its totient is φ = 22796640.

The previous prime is 40750277. The next prime is 40750291. The reversal of 40750281 is 18205704.

It is not a de Polignac number, because 40750281 - 2² = 40750277 is a prime.

It is a super-2 number, since 2×40750281² = 3321170803157922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40750211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14545 + ... + 17118.

It is an arithmetic number, because the mean of its divisors is an integer number (2881424).

Almost surely, 2^40750281 is an apocalyptic number.

It is an amenable number.

40750281 is a deficient number, since it is larger than the sum of its proper divisors (28403895).

40750281 is a wasteful number, since it uses less digits than its factorization.

40750281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31693 (or 31690 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 40750281 is about 6383.5946769826. The cubic root of 40750281 is about 344.1202285042.

Adding to 40750281 its reverse (18205704), we get a palindrome (58955985).

The spelling of 40750281 in words is "forty million, seven hundred fifty thousand, two hundred eighty-one".