40223000 has 128 divisors (see below), whose sum is σ = 103896000. Its totient is φ = 14515200.

The previous prime is 40222999. The next prime is 40223011. The reversal of 40223000 is 32204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 550964 + ... + 551036.

Almost surely, 2^40223000 is an apocalyptic number.

40223000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40223000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51948000).

40223000 is an abundant number, since it is smaller than the sum of its proper divisors (63673000).

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

40223000 is a wasteful number, since it uses less digits than its factorization.

40223000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 40223000 is about 6342.1605151557. The cubic root of 40223000 is about 342.6295529928.

Adding to 40223000 its reverse (32204), we get a palindrome (40255204).

The spelling of 40223000 in words is "forty million, two hundred twenty-three thousand".