40031250 has 112 divisors (see below), whose sum is σ = 116248512. Its totient is φ = 9000000.

The previous prime is 40031239. The next prime is 40031269. The reversal of 40031250 is 5213004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 656220 + ... + 656280.

Almost surely, 2^40031250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40031250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58124256).

40031250 is an abundant number, since it is smaller than the sum of its proper divisors (76217262).

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

40031250 is an frugal number, since it uses more digits than its factorization.

40031250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 40031250 is about 6327.0253674219. The cubic root of 40031250 is about 342.0842273996.

Adding to 40031250 its reverse (5213004), we get a palindrome (45244254).

It can be divided in two parts, 4003 and 1250, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 40031250 in words is "forty million, thirty-one thousand, two hundred fifty".