40156224 has 28 divisors (see below), whose sum is σ = 106247184. Its totient is φ = 13385344.

The previous prime is 40156223. The next prime is 40156247. The reversal of 40156224 is 42265104.

It is a super-2 number, since 2×40156224² = 3225044651876352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 40156194 and 40156203.

It is not an unprimeable number, because it can be changed into a prime (40156223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104382 + ... + 104765.

Almost surely, 2^40156224 is an apocalyptic number.

It is an amenable number.

40156224 is an abundant number, since it is smaller than the sum of its proper divisors (66090960).

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

40156224 is a wasteful number, since it uses less digits than its factorization.

40156224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209162 (or 209152 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 40156224 is about 6336.8938763404. The cubic root of 40156224 is about 342.4398430940.

The spelling of 40156224 in words is "forty million, one hundred fifty-six thousand, two hundred twenty-four".