40228420 has 24 divisors (see below), whose sum is σ = 84930048. Its totient is φ = 16005600.

The previous prime is 40228417. The next prime is 40228427. The reversal of 40228420 is 2482204.

It is a junction number, because it is equal to n+sod(n) for n = 40228391 and 40228400.

It is not an unprimeable number, because it can be changed into a prime (40228427) 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, 1446 + ... + 9085.

It is an arithmetic number, because the mean of its divisors is an integer number (3538752).

Almost surely, 2^40228420 is an apocalyptic number.

It is an amenable number.

40228420 is an abundant number, since it is smaller than the sum of its proper divisors (44701628).

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

40228420 is a wasteful number, since it uses less digits than its factorization.

40228420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10731 (or 10729 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 40228420 is about 6342.5877999441. The cubic root of 40228420 is about 342.6449419392.

The spelling of 40228420 in words is "forty million, two hundred twenty-eight thousand, four hundred twenty".