40402068 has 36 divisors (see below), whose sum is σ = 109664352. Its totient is φ = 11543280.

The previous prime is 40402067. The next prime is 40402091. The reversal of 40402068 is 86020404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33768 + ... + 34943.

It is an arithmetic number, because the mean of its divisors is an integer number (3046232).

Almost surely, 2^40402068 is an apocalyptic number.

It is an amenable number.

40402068 is an abundant number, since it is smaller than the sum of its proper divisors (69262284).

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

40402068 is a wasteful number, since it uses less digits than its factorization.

40402068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68732 (or 68723 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 40402068 is about 6356.2621091330. The cubic root of 40402068 is about 343.1372489746.

The spelling of 40402068 in words is "forty million, four hundred two thousand, sixty-eight".