1428499760 has 20 divisors (see below), whose sum is σ = 3321262128. Its totient is φ = 571399872.

The previous prime is 1428499741. The next prime is 1428499823. The reversal of 1428499760 is 679948241.

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

It is a super-2 number, since 2×1428499760² = 4081223128640115200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1428499699 and 1428499708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8928044 + ... + 8928203.

Almost surely, 2^1428499760 is an apocalyptic number.

1428499760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428499760 is an abundant number, since it is smaller than the sum of its proper divisors (1892762368).

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

1428499760 is a wasteful number, since it uses less digits than its factorization.

1428499760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17856260 (or 17856254 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 1428499760 is about 37795.4992029474. The cubic root of 1428499760 is about 1126.2290462608.

The spelling of 1428499760 in words is "one billion, four hundred twenty-eight million, four hundred ninety-nine thousand, seven hundred sixty".