40811764 has 48 divisors (see below), whose sum is σ = 87550848. Its totient is φ = 16247808.

The previous prime is 40811761. The next prime is 40811767. The reversal of 40811764 is 46711804.

It is an interprime number because it is at equal distance from previous prime (40811761) and next prime (40811767).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40811761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38992 + ... + 40024.

It is an arithmetic number, because the mean of its divisors is an integer number (1823976).

Almost surely, 2^40811764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40811764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43775424).

40811764 is an abundant number, since it is smaller than the sum of its proper divisors (46739084).

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

40811764 is a wasteful number, since it uses less digits than its factorization.

40811764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 40811764 is about 6388.4085655193. The cubic root of 40811764 is about 344.2932081888.

The spelling of 40811764 in words is "forty million, eight hundred eleven thousand, seven hundred sixty-four".