401193378 has 32 divisors (see below), whose sum is σ = 896488320. Its totient is φ = 132989040.

The previous prime is 401193361. The next prime is 401193383. The reversal of 401193378 is 873391104.

It is a happy number.

It is a super-2 number, since 2×401193378² = 321912253102101768, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10750 + ... + 30297.

It is an arithmetic number, because the mean of its divisors is an integer number (28015260).

Almost surely, 2^401193378 is an apocalyptic number.

401193378 is an abundant number, since it is smaller than the sum of its proper divisors (495294942).

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

401193378 is a wasteful number, since it uses less digits than its factorization.

401193378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41239 (or 41233 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 401193378 is about 20029.8122307724. The cubic root of 401193378 is about 737.5383125936.

The spelling of 401193378 in words is "four hundred one million, one hundred ninety-three thousand, three hundred seventy-eight".