1428129894 has 16 divisors (see below), whose sum is σ = 2859983280. Its totient is φ = 475422720.

The previous prime is 1428129893. The next prime is 1428129907. The reversal of 1428129894 is 4989218241.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428129893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150147 + ... + 159374.

It is an arithmetic number, because the mean of its divisors is an integer number (178748955).

Almost surely, 2^1428129894 is an apocalyptic number.

1428129894 is an abundant number, since it is smaller than the sum of its proper divisors (1431853386).

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

1428129894 is a wasteful number, since it uses less digits than its factorization.

1428129894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310295.

The product of its digits is 331776, while the sum is 48.

The square root of 1428129894 is about 37790.6058961748. The cubic root of 1428129894 is about 1126.1318370999.

The spelling of 1428129894 in words is "one billion, four hundred twenty-eight million, one hundred twenty-nine thousand, eight hundred ninety-four".