40255400 has 48 divisors (see below), whose sum is σ = 94011840. Its totient is φ = 16030400.

The previous prime is 40255379. The next prime is 40255417. The reversal of 40255400 is 455204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85967 + ... + 86433.

It is an arithmetic number, because the mean of its divisors is an integer number (1958580).

Almost surely, 2^40255400 is an apocalyptic number.

40255400 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 40255400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47005920).

40255400 is an abundant number, since it is smaller than the sum of its proper divisors (53756440).

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

40255400 is a wasteful number, since it uses less digits than its factorization.

40255400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 40255400 is about 6344.7143355710. The cubic root of 40255400 is about 342.7215253979.

The spelling of 40255400 in words is "forty million, two hundred fifty-five thousand, four hundred".