40022664 has 128 divisors (see below), whose sum is σ = 117504000. Its totient is φ = 11232000.

The previous prime is 40022659. The next prime is 40022693. The reversal of 40022664 is 46622004.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 396214 + ... + 396314.

It is an arithmetic number, because the mean of its divisors is an integer number (918000).

Almost surely, 2^40022664 is an apocalyptic number.

40022664 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40022664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58752000).

40022664 is an abundant number, since it is smaller than the sum of its proper divisors (77481336).

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

40022664 is a wasteful number, since it uses less digits than its factorization.

40022664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 40022664 is about 6326.3468131300. The cubic root of 40022664 is about 342.0597686314.

Adding to 40022664 its reverse (46622004), we get a palindrome (86644668).

It can be divided in two parts, 4002 and 2664, that added together give a palindrome (6666).

The spelling of 40022664 in words is "forty million, twenty-two thousand, six hundred sixty-four".