1420688 has 10 divisors (see below), whose sum is σ = 2752614. Its totient is φ = 710336.

The previous prime is 1420667. The next prime is 1420697. The reversal of 1420688 is 8860241.

It can be written as a sum of positive squares in only one way, i.e., 861184 + 559504 = 928^2 + 748^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1420688.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44381 + ... + 44412.

2^1420688 is an apocalyptic number.

It is an amenable number.

1420688 is a deficient number, since it is larger than the sum of its proper divisors (1331926).

1420688 is an equidigital number, since it uses as much as digits as its factorization.

1420688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88801 (or 88795 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1420688 is about 1191.9261722103. The cubic root of 1420688 is about 112.4172362468.

It can be divided in two parts, 14 and 20688, that added together give a palindrome (20702).

The spelling of 1420688 in words is "one million, four hundred twenty thousand, six hundred eighty-eight".