401696078 has 48 divisors (see below), whose sum is σ = 723062880. Its totient is φ = 163918080.

The previous prime is 401696051. The next prime is 401696101. The reversal of 401696078 is 870696104.

It is a super-2 number, since 2×401696078² = 322719478161164168, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 981938 + ... + 982346.

It is an arithmetic number, because the mean of its divisors is an integer number (15063810).

Almost surely, 2^401696078 is an apocalyptic number.

401696078 is a deficient number, since it is larger than the sum of its proper divisors (321366802).

401696078 is a wasteful number, since it uses less digits than its factorization.

401696078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 401696078 is about 20042.3570969085. The cubic root of 401696078 is about 737.8462320675.

The spelling of 401696078 in words is "four hundred one million, six hundred ninety-six thousand, seventy-eight".