40233420 has 72 divisors (see below), whose sum is σ = 123557616. Its totient is φ = 10595712.

The previous prime is 40233409. The next prime is 40233449. The reversal of 40233420 is 2433204.

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 = 40233393 and 40233402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13594 + ... + 16286.

It is an arithmetic number, because the mean of its divisors is an integer number (1716078).

Almost surely, 2^40233420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40233420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61778808).

40233420 is an abundant number, since it is smaller than the sum of its proper divisors (83324196).

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

40233420 is a wasteful number, since it uses less digits than its factorization.

40233420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791 (or 2786 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40233420 is about 6342.9819485791. The cubic root of 40233420 is about 342.6591371585.

Adding to 40233420 its reverse (2433204), we get a palindrome (42666624).

The spelling of 40233420 in words is "forty million, two hundred thirty-three thousand, four hundred twenty".