40224072 has 32 divisors (see below), whose sum is σ = 114926400. Its totient is φ = 11492544.

The previous prime is 40224059. The next prime is 40224077. The reversal of 40224072 is 27042204.

It is a super-2 number, since 2×40224072² = 3235951936522368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (40224077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119547 + ... + 119882.

It is an arithmetic number, because the mean of its divisors is an integer number (3591450).

Almost surely, 2^40224072 is an apocalyptic number.

40224072 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40224072 is an abundant number, since it is smaller than the sum of its proper divisors (74702328).

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

40224072 is a wasteful number, since it uses less digits than its factorization.

40224072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239445 (or 239441 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 40224072 is about 6342.2450283791. The cubic root of 40224072 is about 342.6325968203.

Adding to 40224072 its reverse (27042204), we get a palindrome (67266276).

The spelling of 40224072 in words is "forty million, two hundred twenty-four thousand, seventy-two".