401904972280 has 32 divisors (see below), whose sum is σ = 1033469929440. Its totient is φ = 137795990400.

The previous prime is 401904972253. The next prime is 401904972307. The reversal of 401904972280 is 82279409104.

It is an interprime number because it is at equal distance from previous prime (401904972253) and next prime (401904972307).

It is a self number, because there is not a number n which added to its sum of digits gives 401904972280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717687171 + ... + 717687730.

It is an arithmetic number, because the mean of its divisors is an integer number (32295935295).

Almost surely, 2^401904972280 is an apocalyptic number.

401904972280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401904972280 is an abundant number, since it is smaller than the sum of its proper divisors (631564957160).

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

401904972280 is a wasteful number, since it uses less digits than its factorization.

401904972280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435374919 (or 1435374915 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 401904972280 in words is "four hundred one billion, nine hundred four million, nine hundred seventy-two thousand, two hundred eighty".