401304280 has 32 divisors (see below), whose sum is σ = 972392400. Its totient is φ = 148173696.

The previous prime is 401304199. The next prime is 401304289. The reversal of 401304280 is 82403104.

It is a super-2 number, since 2×401304280² = 322090250292636800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401304289) 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, 385350 + ... + 386389.

Almost surely, 2^401304280 is an apocalyptic number.

401304280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401304280 is an abundant number, since it is smaller than the sum of its proper divisors (571088120).

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

401304280 is a wasteful number, since it uses less digits than its factorization.

401304280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771763 (or 771759 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 401304280 is about 20032.5804628360. The cubic root of 401304280 is about 737.6062656413.

Adding to 401304280 its reverse (82403104), we get a palindrome (483707384).

The spelling of 401304280 in words is "four hundred one million, three hundred four thousand, two hundred eighty".