40251000 has 64 divisors (see below), whose sum is σ = 125592480. Its totient is φ = 10732800.

The previous prime is 40250981. The next prime is 40251007. The reversal of 40251000 is 15204.

40251000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40251007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3709 + ... + 9708.

Almost surely, 2^40251000 is an apocalyptic number.

40251000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40251000 is an abundant number, since it is smaller than the sum of its proper divisors (85341480).

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

40251000 is a wasteful number, since it uses less digits than its factorization.

40251000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13441 (or 13427 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 40251000 is about 6344.3675807759. The cubic root of 40251000 is about 342.7090382147.

Adding to 40251000 its reverse (15204), we get a palindrome (40266204).

The spelling of 40251000 in words is "forty million, two hundred fifty-one thousand".