1428620 has 24 divisors (see below), whose sum is σ = 3051888. Its totient is φ = 561600.

The previous prime is 1428613. The next prime is 1428631. The reversal of 1428620 is 268241.

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, 635 + ... + 1805.

It is an arithmetic number, because the mean of its divisors is an integer number (127162).

2^1428620 is an apocalyptic number.

1428620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428620 is an abundant number, since it is smaller than the sum of its proper divisors (1623268).

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

1428620 is a wasteful number, since it uses less digits than its factorization.

1428620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1428620 is about 1195.2489280480. The cubic root of 1428620 is about 112.6260644442.

It can be divided in two parts, 1428 and 620, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1428620 in words is "one million, four hundred twenty-eight thousand, six hundred twenty".