1420388 has 12 divisors (see below), whose sum is σ = 2593920. Its totient is φ = 679272.

The previous prime is 1420373. The next prime is 1420399. The reversal of 1420388 is 8830241.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7628 + ... + 7811.

It is an arithmetic number, because the mean of its divisors is an integer number (216160).

2^1420388 is an apocalyptic number.

It is an amenable number.

1420388 is a deficient number, since it is larger than the sum of its proper divisors (1173532).

1420388 is a wasteful number, since it uses less digits than its factorization.

1420388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15466 (or 15464 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 1420388 is about 1191.8003188454. The cubic root of 1420388 is about 112.4093228168.

It can be divided in two parts, 14 and 20388, that added together give a palindrome (20402).

The spelling of 1420388 in words is "one million, four hundred twenty thousand, three hundred eighty-eight".