40026220 has 24 divisors (see below), whose sum is σ = 90521424. Its totient is φ = 14778816.

The previous prime is 40026197. The next prime is 40026221. The reversal of 40026220 is 2262004.

It is a junction number, because it is equal to n+sod(n) for n = 40026194 and 40026203.

It is not an unprimeable number, because it can be changed into a prime (40026221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76714 + ... + 77233.

It is an arithmetic number, because the mean of its divisors is an integer number (3771726).

Almost surely, 2^40026220 is an apocalyptic number.

It is an amenable number.

40026220 is an abundant number, since it is smaller than the sum of its proper divisors (50495204).

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

40026220 is a wasteful number, since it uses less digits than its factorization.

40026220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153969 (or 153967 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40026220 is about 6326.6278537622. The cubic root of 40026220 is about 342.0698989625.

Adding to 40026220 its reverse (2262004), we get a palindrome (42288224).

The spelling of 40026220 in words is "forty million, twenty-six thousand, two hundred twenty".