40433140 has 96 divisors (see below), whose sum is σ = 103420800. Its totient is φ = 13086720.

The previous prime is 40433137. The next prime is 40433143. The reversal of 40433140 is 4133404.

It is an interprime number because it is at equal distance from previous prime (40433137) and next prime (40433143).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40433143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70776 + ... + 71344.

It is an arithmetic number, because the mean of its divisors is an integer number (1077300).

Almost surely, 2^40433140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40433140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51710400).

40433140 is an abundant number, since it is smaller than the sum of its proper divisors (62987660).

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

40433140 is a wasteful number, since it uses less digits than its factorization.

40433140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40433140 is about 6358.7058431728. The cubic root of 40433140 is about 343.2251919029.

Adding to 40433140 its reverse (4133404), we get a palindrome (44566544).

The spelling of 40433140 in words is "forty million, four hundred thirty-three thousand, one hundred forty".