40627818 has 80 divisors (see below), whose sum is σ = 113534784. Its totient is φ = 10549440.

The previous prime is 40627781. The next prime is 40627831. The reversal of 40627818 is 81872604.

It is a super-2 number, since 2×40627818² = 3301239190882248, which contains 22 as substring.

It is a Curzon number.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10846 + ... + 14102.

Almost surely, 2^40627818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40627818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56767392).

40627818 is an abundant number, since it is smaller than the sum of its proper divisors (72906966).

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

40627818 is a wasteful number, since it uses less digits than its factorization.

40627818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289 (or 3280 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 40627818 is about 6373.9954502651. The cubic root of 40627818 is about 343.7751651880.

It can be divided in two parts, 406 and 27818, that added together give a square (28224 = 168²).

The spelling of 40627818 in words is "forty million, six hundred twenty-seven thousand, eight hundred eighteen".