40250040 has 32 divisors (see below), whose sum is σ = 120750480. Its totient is φ = 10733312.

The previous prime is 40250029. The next prime is 40250047. The reversal of 40250040 is 4005204.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40250047) 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, 167589 + ... + 167828.

Almost surely, 2^40250040 is an apocalyptic number.

40250040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40250040 is an abundant number, since it is smaller than the sum of its proper divisors (80500440).

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

40250040 is a wasteful number, since it uses less digits than its factorization.

40250040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335431 (or 335427 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 40250040 is about 6344.2919226656. The cubic root of 40250040 is about 342.7063136175.

Adding to 40250040 its reverse (4005204), we get a palindrome (44255244).

The spelling of 40250040 in words is "forty million, two hundred fifty thousand, forty".