1401478 has 16 divisors (see below), whose sum is σ = 2383920. Its totient is φ = 612576.

The previous prime is 1401461. The next prime is 1401481. The reversal of 1401478 is 8741041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925 + ... + 1912.

It is an arithmetic number, because the mean of its divisors is an integer number (148995).

2^1401478 is an apocalyptic number.

1401478 is a deficient number, since it is larger than the sum of its proper divisors (982442).

1401478 is a wasteful number, since it uses less digits than its factorization.

1401478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 1401478 is about 1183.8403608595. The cubic root of 1401478 is about 111.9082475593.

The spelling of 1401478 in words is "one million, four hundred one thousand, four hundred seventy-eight".