401341640 has 32 divisors (see below), whose sum is σ = 1032022080. Its totient is φ = 137602752.

The previous prime is 401341639. The next prime is 401341657. The reversal of 401341640 is 46143104.

It is a super-2 number, since 2×401341640² = 322150223995779200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716402 + ... + 716961.

It is an arithmetic number, because the mean of its divisors is an integer number (32250690).

Almost surely, 2^401341640 is an apocalyptic number.

401341640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401341640 is an abundant number, since it is smaller than the sum of its proper divisors (630680440).

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

401341640 is a wasteful number, since it uses less digits than its factorization.

401341640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433381 (or 1433377 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 401341640 is about 20033.5129221013. The cubic root of 401341640 is about 737.6291544370.

Adding to 401341640 its reverse (46143104), we get a palindrome (447484744).

The spelling of 401341640 in words is "four hundred one million, three hundred forty-one thousand, six hundred forty".