40011428 has 12 divisors (see below), whose sum is σ = 70524720. Its totient is φ = 19861512.

The previous prime is 40011427. The next prime is 40011431. The reversal of 40011428 is 82411004.

It is not an unprimeable number, because it can be changed into a prime (40011427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35426 + ... + 36537.

It is an arithmetic number, because the mean of its divisors is an integer number (5877060).

Almost surely, 2^40011428 is an apocalyptic number.

It is an amenable number.

40011428 is a deficient number, since it is larger than the sum of its proper divisors (30513292).

40011428 is a wasteful number, since it uses less digits than its factorization.

40011428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72106 (or 72104 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 40011428 is about 6325.4587185437. The cubic root of 40011428 is about 342.0277555760.

The spelling of 40011428 in words is "forty million, eleven thousand, four hundred twenty-eight".