401302320 has 80 divisors (see below), whose sum is σ = 1246155360. Its totient is φ = 106831872.

The previous prime is 401302303. The next prime is 401302331. The reversal of 401302320 is 23203104.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×401302320² = 322087104074764800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 401302320.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197952 + ... + 199968.

It is an arithmetic number, because the mean of its divisors is an integer number (15576942).

Almost surely, 2^401302320 is an apocalyptic number.

401302320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401302320 is an abundant number, since it is smaller than the sum of its proper divisors (844853040).

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

401302320 is a wasteful number, since it uses less digits than its factorization.

401302320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862 (or 2856 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 401302320 is about 20032.5315424686. The cubic root of 401302320 is about 737.6050647980.

Adding to 401302320 its reverse (23203104), we get a palindrome (424505424).

The spelling of 401302320 in words is "four hundred one million, three hundred two thousand, three hundred twenty".