1428610840 has 32 divisors (see below), whose sum is σ = 3220300080. Its totient is φ = 570390912.

The previous prime is 1428610787. The next prime is 1428610873. The reversal of 1428610840 is 480168241.

It is a junction number, because it is equal to n+sod(n) for n = 1428610796 and 1428610805.

It is a congruent number.

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, 10767 + ... + 54526.

Almost surely, 2^1428610840 is an apocalyptic number.

1428610840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428610840 is an abundant number, since it is smaller than the sum of its proper divisors (1791689240).

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

1428610840 is a wasteful number, since it uses less digits than its factorization.

1428610840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65851 (or 65847 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 1428610840 is about 37796.9686615210. The cubic root of 1428610840 is about 1126.2582373239.

The spelling of 1428610840 in words is "one billion, four hundred twenty-eight million, six hundred ten thousand, eight hundred forty".