40030000 has 50 divisors (see below), whose sum is σ = 96940844. Its totient is φ = 16008000.

The previous prime is 40029989. The next prime is 40030027. The reversal of 40030000 is 3004.

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

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7999 + ... + 12001.

Almost surely, 2^40030000 is an apocalyptic number.

40030000 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 40030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48470422).

40030000 is an abundant number, since it is smaller than the sum of its proper divisors (56910844).

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

40030000 is an equidigital number, since it uses as much as digits as its factorization.

40030000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031 (or 4010 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 40030000 is about 6326.9265840533. The cubic root of 40030000 is about 342.0806667669.

Adding to 40030000 its reverse (3004), we get a palindrome (40033004).

The spelling of 40030000 in words is "forty million, thirty thousand", and thus it is an eban number.