40451224 has 32 divisors (see below), whose sum is σ = 83361600. Its totient is φ = 18249120.

The previous prime is 40451219. The next prime is 40451233. The reversal of 40451224 is 42215404.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 40451195 and 40451204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10579 + ... + 13885.

It is an arithmetic number, because the mean of its divisors is an integer number (2605050).

Almost surely, 2^40451224 is an apocalyptic number.

40451224 is a gapful number since it is divisible by the number (44) 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 40451224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41680800).

40451224 is an abundant number, since it is smaller than the sum of its proper divisors (42910376).

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

40451224 is a wasteful number, since it uses less digits than its factorization.

40451224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463 (or 3459 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 40451224 is about 6360.1276716745. The cubic root of 40451224 is about 343.2763542188.

Adding to 40451224 its reverse (42215404), we get a palindrome (82666628).

The spelling of 40451224 in words is "forty million, four hundred fifty-one thousand, two hundred twenty-four".