40250400 has 144 divisors (see below), whose sum is σ = 135491328. Its totient is φ = 10368000.

The previous prime is 40250389. The next prime is 40250401. The reversal of 40250400 is 405204.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40250400.

It is not an unprimeable number, because it can be changed into a prime (40250401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74130 + ... + 74670.

It is an arithmetic number, because the mean of its divisors is an integer number (940912).

Almost surely, 2^40250400 is an apocalyptic number.

40250400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40250400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67745664).

40250400 is an abundant number, since it is smaller than the sum of its proper divisors (95240928).

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

40250400 is a wasteful number, since it uses less digits than its factorization.

40250400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595 (or 582 counting only the distinct ones).

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

The square root of 40250400 is about 6344.3202945627. The cubic root of 40250400 is about 342.7073353465.

Adding to 40250400 its reverse (405204), we get a palindrome (40655604).

The spelling of 40250400 in words is "forty million, two hundred fifty thousand, four hundred".