40286032644 has 48 divisors (see below), whose sum is σ = 110434443840. Its totient is φ = 11268819840.

The previous prime is 40286032643. The next prime is 40286032663. The reversal of 40286032644 is 44623068204.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (40286032643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11736639 + ... + 11740070.

It is an arithmetic number, because the mean of its divisors is an integer number (2300717580).

Almost surely, 2^40286032644 is an apocalyptic number.

40286032644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40286032644 is an abundant number, since it is smaller than the sum of its proper divisors (70148411196).

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

40286032644 is a wasteful number, since it uses less digits than its factorization.

40286032644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23476740 (or 23476738 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 39.

The spelling of 40286032644 in words is "forty billion, two hundred eighty-six million, thirty-two thousand, six hundred forty-four".