1428651500 has 24 divisors (see below), whose sum is σ = 3120175968. Its totient is φ = 571460400.

The previous prime is 1428651493. The next prime is 1428651503. The reversal of 1428651500 is 51568241.

It is not an unprimeable number, because it can be changed into a prime (1428651503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1428152 + ... + 1429151.

It is an arithmetic number, because the mean of its divisors is an integer number (130007332).

Almost surely, 2^1428651500 is an apocalyptic number.

1428651500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428651500 is an abundant number, since it is smaller than the sum of its proper divisors (1691524468).

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

1428651500 is a wasteful number, since it uses less digits than its factorization.

1428651500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857322 (or 2857310 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 1428651500 is about 37797.5065315161. The cubic root of 1428651500 is about 1126.2689221150.

The spelling of 1428651500 in words is "one billion, four hundred twenty-eight million, six hundred fifty-one thousand, five hundred".