40821264 has 60 divisors (see below), whose sum is σ = 124633392. Its totient is φ = 12369600.

The previous prime is 40821259. The next prime is 40821307. The reversal of 40821264 is 46212804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11302 + ... + 14469.

Almost surely, 2^40821264 is an apocalyptic number.

40821264 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40821264 is an abundant number, since it is smaller than the sum of its proper divisors (83812128).

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

40821264 is a wasteful number, since it uses less digits than its factorization.

40821264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25796 (or 25787 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 40821264 is about 6389.1520564156. The cubic root of 40821264 is about 344.3199205171.

The spelling of 40821264 in words is "forty million, eight hundred twenty-one thousand, two hundred sixty-four".