200401506 has 16 divisors (see below), whose sum is σ = 445336800. Its totient is φ = 66800484.

The previous prime is 200401501. The next prime is 200401511. The reversal of 200401506 is 605104002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (200401501) and next prime (200401511).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (200401501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1855516 + ... + 1855623.

It is an arithmetic number, because the mean of its divisors is an integer number (27833550).

Almost surely, 2^200401506 is an apocalyptic number.

200401506 is an abundant number, since it is smaller than the sum of its proper divisors (244935294).

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

200401506 is a wasteful number, since it uses less digits than its factorization.

200401506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711150 (or 3711144 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 200401506 is about 14156.3238872244. The cubic root of 200401506 is about 585.1946229494.

Adding to 200401506 its reverse (605104002), we get a palindrome (805505508).

The spelling of 200401506 in words is "two hundred million, four hundred one thousand, five hundred six".