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1478 = 2739

1478 has 4 divisors (see below), whose sum is σ = 2220. Its totient is φ = 738.

The previous prime is 1471. The next prime is 1481. The reversal of 1478 is 8741.

It is a happy number.

1478 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between odd and even.

1478 is strictly pandigital in base 5.

It is a Curzon number.

It is a plaindrome in base 10, base 11, base 13, base 14 and base 15.

It is a nialpdrome in base 7 and base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 368 + ... + 371.

It is an arithmetic number, because the mean of its divisors is an integer number (555).

21478 is an apocalyptic number.

1478 is a deficient number, since it is larger than the sum of its proper divisors (742).

1478 is an equidigital number, since it uses as much as digits as its factorization.

1478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741.

The product of its digits is 224, while the sum is 20.

The square root of 1478 is about 38.4447655735. Note that the first 3 decimals coincide. The cubic root of 1478 is about 11.3909027659.

It can be divided in two parts, 147 and 8, that multiplied together give a triangular number (1176 = T48).

The spelling of 1478 in words is "one thousand, four hundred seventy-eight".

Divisors: 1 2 739 1478