40231152 has 60 divisors (see below), whose sum is σ = 121257864. Its totient is φ = 12378240.

The previous prime is 40231133. The next prime is 40231153. The reversal of 40231152 is 25113204.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40231153) 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, 8874 + ... + 12617.

Almost surely, 2^40231152 is an apocalyptic number.

It is an amenable number.

40231152 is an abundant number, since it is smaller than the sum of its proper divisors (81026712).

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

40231152 is a wasteful number, since it uses less digits than its factorization.

40231152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21518 (or 21509 counting only the distinct ones).

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

The square root of 40231152 is about 6342.8031657935. The cubic root of 40231152 is about 342.6526983528.

Adding to 40231152 its reverse (25113204), we get a palindrome (65344356).

The spelling of 40231152 in words is "forty million, two hundred thirty-one thousand, one hundred fifty-two".