401743278 has 12 divisors (see below), whose sum is σ = 870443808. Its totient is φ = 133914420.

The previous prime is 401743273. The next prime is 401743301. The reversal of 401743278 is 872347104.

It is a happy number.

It is a super-2 number, since 2×401743278² = 322795322836370568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401743271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11159518 + ... + 11159553.

It is an arithmetic number, because the mean of its divisors is an integer number (72536984).

Almost surely, 2^401743278 is an apocalyptic number.

401743278 is an abundant number, since it is smaller than the sum of its proper divisors (468700530).

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

401743278 is a wasteful number, since it uses less digits than its factorization.

401743278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22319079 (or 22319076 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 401743278 is about 20043.5345685336. The cubic root of 401743278 is about 737.8751303483.

The spelling of 401743278 in words is "four hundred one million, seven hundred forty-three thousand, two hundred seventy-eight".