401769312 has 96 divisors (see below), whose sum is σ = 1208616192. Its totient is φ = 114476544.

The previous prime is 401769299. The next prime is 401769317. The reversal of 401769312 is 213967104.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×401769312² = 322837160129906688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401769317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367038 + ... + 368130.

It is an arithmetic number, because the mean of its divisors is an integer number (12589752).

Almost surely, 2^401769312 is an apocalyptic number.

401769312 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401769312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604308096).

401769312 is an abundant number, since it is smaller than the sum of its proper divisors (806846880).

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

401769312 is a wasteful number, since it uses less digits than its factorization.

401769312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660 (or 1652 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 401769312 is about 20044.1839943660. The cubic root of 401769312 is about 737.8910687409.

The spelling of 401769312 in words is "four hundred one million, seven hundred sixty-nine thousand, three hundred twelve".