40287400 has 24 divisors (see below), whose sum is σ = 93668670. Its totient is φ = 16114880.

The previous prime is 40287397. The next prime is 40287419. The reversal of 40287400 is 478204.

40287400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 24462916 + 15824484 = 4946^2 + 3978^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 100519 + ... + 100918.

Almost surely, 2^40287400 is an apocalyptic number.

40287400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40287400 is an abundant number, since it is smaller than the sum of its proper divisors (53381270).

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

40287400 is a wasteful number, since it uses less digits than its factorization.

40287400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201453 (or 201444 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 40287400 is about 6347.2356187556. The cubic root of 40287400 is about 342.8123139140.

The spelling of 40287400 in words is "forty million, two hundred eighty-seven thousand, four hundred".