40287170428 has 12 divisors (see below), whose sum is σ = 72408022792. Its totient is φ = 19599163920.

The previous prime is 40287170393. The next prime is 40287170459. The reversal of 40287170428 is 82407178204.

It is a super-2 number, since 2×40287170428² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136105158 + ... + 136105453.

Almost surely, 2^40287170428 is an apocalyptic number.

It is an amenable number.

40287170428 is a deficient number, since it is larger than the sum of its proper divisors (32120852364).

40287170428 is a wasteful number, since it uses less digits than its factorization.

40287170428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272210652 (or 272210650 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 43.

The spelling of 40287170428 in words is "forty billion, two hundred eighty-seven million, one hundred seventy thousand, four hundred twenty-eight".