1423280 has 20 divisors (see below), whose sum is σ = 3309312. Its totient is φ = 569280.

The previous prime is 1423277. The next prime is 1423283. The reversal of 1423280 is 823241.

It is an interprime number because it is at equal distance from previous prime (1423277) and next prime (1423283).

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1423283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8816 + ... + 8975.

2^1423280 is an apocalyptic number.

1423280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423280 is an abundant number, since it is smaller than the sum of its proper divisors (1886032).

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

1423280 is a wasteful number, since it uses less digits than its factorization.

1423280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17804 (or 17798 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1423280 is about 1193.0129923852. The cubic root of 1423280 is about 112.4855619331.

The spelling of 1423280 in words is "one million, four hundred twenty-three thousand, two hundred eighty".