40268820 has 48 divisors (see below), whose sum is σ = 116645760. Its totient is φ = 10367616.

The previous prime is 40268819. The next prime is 40268843. The reversal of 40268820 is 2886204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 9832 + ... + 13311.

It is an arithmetic number, because the mean of its divisors is an integer number (2430120).

Almost surely, 2^40268820 is an apocalyptic number.

It is an amenable number.

40268820 is an abundant number, since it is smaller than the sum of its proper divisors (76376940).

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

40268820 is a wasteful number, since it uses less digits than its factorization.

40268820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23184 (or 23182 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 40268820 is about 6345.7718206693. The cubic root of 40268820 is about 342.7596056875.

The spelling of 40268820 in words is "forty million, two hundred sixty-eight thousand, eight hundred twenty".