401771340 has 216 divisors, whose sum is σ = 1339687440. Its totient is φ = 101056896.

The previous prime is 401771333. The next prime is 401771351. The reversal of 401771340 is 43177104.

It is a super-2 number, since 2×401771340² = 322840419290791200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1754346 + ... + 1754574.

Almost surely, 2^401771340 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 401771340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669843720).

401771340 is an abundant number, since it is smaller than the sum of its proper divisors (937916100).

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

401771340 is a wasteful number, since it uses less digits than its factorization.

401771340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 401771340 is about 20044.2345825427. The cubic root of 401771340 is about 737.8923102830.

It can be divided in two parts, 4017 and 71340, that added together give a palindrome (75357).

The spelling of 401771340 in words is "four hundred one million, seven hundred seventy-one thousand, three hundred forty".