40730000 has 50 divisors (see below), whose sum is σ = 98635614. Its totient is φ = 16288000.

The previous prime is 40729999. The next prime is 40730003. The reversal of 40730000 is 3704.

It can be written as a sum of positive squares in 5 ways, for example, as 25080064 + 15649936 = 5008^2 + 3956^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is not an unprimeable number, because it can be changed into a prime (40730003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7964 + ... + 12036.

Almost surely, 2^40730000 is an apocalyptic number.

40730000 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 40730000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49317807).

40730000 is an abundant number, since it is smaller than the sum of its proper divisors (57905614).

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

40730000 is an equidigital number, since it uses as much as digits as its factorization.

40730000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101 (or 4080 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 40730000 is about 6382.0059542435. The cubic root of 40730000 is about 344.0631306526.

Adding to 40730000 its reverse (3704), we get a palindrome (40733704).

The spelling of 40730000 in words is "forty million, seven hundred thirty thousand".