401432278 has 32 divisors (see below), whose sum is σ = 657125280. Its totient is φ = 182822400.

The previous prime is 401432267. The next prime is 401432281. The reversal of 401432278 is 872234104.

It is a super-2 number, since 2×401432278² = 322295747640538568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1000878 + ... + 1001278.

It is an arithmetic number, because the mean of its divisors is an integer number (20535165).

Almost surely, 2^401432278 is an apocalyptic number.

401432278 is a deficient number, since it is larger than the sum of its proper divisors (255693002).

401432278 is a wasteful number, since it uses less digits than its factorization.

401432278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 401432278 is about 20035.7749538170. The cubic root of 401432278 is about 737.6846783699.

It can be divided in two parts, 401432 and 278, that multiplied together give a square (111598096 = 10564²).

The spelling of 401432278 in words is "four hundred one million, four hundred thirty-two thousand, two hundred seventy-eight".