1428979235 has 16 divisors (see below), whose sum is σ = 1731013632. Its totient is φ = 1132387200.

The previous prime is 1428979231. The next prime is 1428979243. The reversal of 1428979235 is 5329798241.

It is not a de Polignac number, because 1428979235 - 2² = 1428979231 is a prime.

It is a super-2 number, since 2×1428979235² = 4083963308122370450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428979231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519965 + ... + 522705.

It is an arithmetic number, because the mean of its divisors is an integer number (108188352).

Almost surely, 2^1428979235 is an apocalyptic number.

1428979235 is a deficient number, since it is larger than the sum of its proper divisors (302034397).

1428979235 is a wasteful number, since it uses less digits than its factorization.

1428979235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694.

The product of its digits is 1088640, while the sum is 50.

The square root of 1428979235 is about 37801.8416879390. The cubic root of 1428979235 is about 1126.3550381770.

The spelling of 1428979235 in words is "one billion, four hundred twenty-eight million, nine hundred seventy-nine thousand, two hundred thirty-five".