40151232 has 84 divisors (see below), whose sum is σ = 125568456. Its totient is φ = 12165120.

The previous prime is 40151219. The next prime is 40151239. The reversal of 40151232 is 23215104.

It is a super-2 number, since 2×40151232² = 3224242862235648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40151239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3168 + ... + 9504.

Almost surely, 2^40151232 is an apocalyptic number.

It is a pronic number, being equal to 6336×6337.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40151232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62784228).

40151232 is an abundant number, since it is smaller than the sum of its proper divisors (85417224).

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

40151232 is a wasteful number, since it uses less digits than its factorization.

40151232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6366 (or 6353 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40151232 is about 6336.4999802730. The cubic root of 40151232 is about 342.4256524293.

Adding to 40151232 its reverse (23215104), we get a palindrome (63366336).

The spelling of 40151232 in words is "forty million, one hundred fifty-one thousand, two hundred thirty-two".