40262220 has 36 divisors (see below), whose sum is σ = 122129280. Its totient is φ = 10736544.

The previous prime is 40262219. The next prime is 40262263. The reversal of 40262220 is 2226204.

It is a happy number.

40262220 is a `hidden beast` number, since 40 + 2 + 622 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40262193 and 40262202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111660 + ... + 112019.

It is an arithmetic number, because the mean of its divisors is an integer number (3392480).

Almost surely, 2^40262220 is an apocalyptic number.

It is an amenable number.

40262220 is an abundant number, since it is smaller than the sum of its proper divisors (81867060).

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

40262220 is a wasteful number, since it uses less digits than its factorization.

40262220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223694 (or 223689 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40262220 is about 6345.2517680546. The cubic root of 40262220 is about 342.7408787336.

Adding to 40262220 its reverse (2226204), we get a palindrome (42488424).

The spelling of 40262220 in words is "forty million, two hundred sixty-two thousand, two hundred twenty".