401731792 has 120 divisors (see below), whose sum is σ = 1015247520. Its totient is φ = 152167680.

The previous prime is 401731783. The next prime is 401731793. The reversal of 401731792 is 297137104.

It is a super-2 number, since 2×401731792² = 322776865407062528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401731793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318459 + ... + 319717.

It is an arithmetic number, because the mean of its divisors is an integer number (8460396).

Almost surely, 2^401731792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401731792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507623760).

401731792 is an abundant number, since it is smaller than the sum of its proper divisors (613515728).

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

401731792 is a wasteful number, since it uses less digits than its factorization.

401731792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 401731792 is about 20043.2480401755. The cubic root of 401731792 is about 737.8680982336.

Adding to 401731792 its reverse (297137104), we get a palindrome (698868896).

The spelling of 401731792 in words is "four hundred one million, seven hundred thirty-one thousand, seven hundred ninety-two".