1428126890 has 16 divisors (see below), whose sum is σ = 2571060960. Its totient is φ = 571154640.

The previous prime is 1428126877. The next prime is 1428126893. The reversal of 1428126890 is 986218241.

It is not an unprimeable number, because it can be changed into a prime (1428126893) 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, 101081 + ... + 114339.

It is an arithmetic number, because the mean of its divisors is an integer number (160691310).

Almost surely, 2^1428126890 is an apocalyptic number.

1428126890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1428126890 is a deficient number, since it is larger than the sum of its proper divisors (1142934070).

1428126890 is a wasteful number, since it uses less digits than its factorization.

1428126890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24037.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 1428126890 is about 37790.5661508266. The cubic root of 1428126890 is about 1126.1310475120.

The spelling of 1428126890 in words is "one billion, four hundred twenty-eight million, one hundred twenty-six thousand, eight hundred ninety".