1428220995 has 32 divisors (see below), whose sum is σ = 2461446144. Its totient is φ = 705091200.

The previous prime is 1428220991. The next prime is 1428221059. The reversal of 1428220995 is 5990228241.

It is a happy number.

It is not a de Polignac number, because 1428220995 - 2² = 1428220991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1428220991) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 56076 + ... + 77465.

It is an arithmetic number, because the mean of its divisors is an integer number (76920192).

Almost surely, 2^1428220995 is an apocalyptic number.

1428220995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1428220995 is a deficient number, since it is larger than the sum of its proper divisors (1033225149).

1428220995 is a wasteful number, since it uses less digits than its factorization.

1428220995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133603.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1428220995 is about 37791.8112161881. The cubic root of 1428220995 is about 1126.1557820635.

The spelling of 1428220995 in words is "one billion, four hundred twenty-eight million, two hundred twenty thousand, nine hundred ninety-five".