40647400 has 48 divisors (see below), whose sum is σ = 96829740. Its totient is φ = 15859200.

The previous prime is 40647367. The next prime is 40647413. The reversal of 40647400 is 474604.

It is a happy number.

40647400 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 6 ways, for example, as 11249316 + 29398084 = 3354^2 + 5422^2 .

It is a super-2 number, since 2×40647400² = 3304422253520000, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 5722 + ... + 10678.

Almost surely, 2^40647400 is an apocalyptic number.

40647400 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 40647400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48414870).

40647400 is an abundant number, since it is smaller than the sum of its proper divisors (56182340).

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

40647400 is a wasteful number, since it uses less digits than its factorization.

40647400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014 (or 5005 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 40647400 is about 6375.5313504052. The cubic root of 40647400 is about 343.8303878110.

The spelling of 40647400 in words is "forty million, six hundred forty-seven thousand, four hundred".