40263426 has 64 divisors (see below), whose sum is σ = 105811200. Its totient is φ = 11104128.

The previous prime is 40263407. The next prime is 40263481. The reversal of 40263426 is 62436204.

40263426 is a `hidden beast` number, since 4 + 0 + 2 + 634 + 26 = 666.

It is a super-2 number, since 2×40263426² = 3242286946514952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 40263426.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9126 + ... + 12798.

It is an arithmetic number, because the mean of its divisors is an integer number (1653300).

Almost surely, 2^40263426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40263426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52905600).

40263426 is an abundant number, since it is smaller than the sum of its proper divisors (65547774).

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

40263426 is a wasteful number, since it uses less digits than its factorization.

40263426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720 (or 3714 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 40263426 is about 6345.3467990331. The cubic root of 40263426 is about 342.7443008116.

The spelling of 40263426 in words is "forty million, two hundred sixty-three thousand, four hundred twenty-six".