40151144 has 32 divisors (see below), whose sum is σ = 86961600. Its totient is φ = 17176320.

The previous prime is 40151143. The next prime is 40151147. The reversal of 40151144 is 44115104.

It is a super-2 number, since 2×40151144² = 3224228729017472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40151143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11924 + ... + 14915.

It is an arithmetic number, because the mean of its divisors is an integer number (2717550).

Almost surely, 2^40151144 is an apocalyptic number.

40151144 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40151144 is an abundant number, since it is smaller than the sum of its proper divisors (46810456).

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

40151144 is a wasteful number, since it uses less digits than its factorization.

40151144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26873 (or 26869 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 40151144 is about 6336.4930363727. The cubic root of 40151144 is about 342.4254022628.

Adding to 40151144 its reverse (44115104), we get a palindrome (84266248).

The spelling of 40151144 in words is "forty million, one hundred fifty-one thousand, one hundred forty-four".