1428297156 has 288 divisors, whose sum is σ = 4453577856. Its totient is φ = 380160000.

The previous prime is 1428297149. The next prime is 1428297173. The reversal of 1428297156 is 6517928241.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14141506 + ... + 14141606.

It is an arithmetic number, because the mean of its divisors is an integer number (15463812).

Almost surely, 2^1428297156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1428297156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2226788928).

1428297156 is an abundant number, since it is smaller than the sum of its proper divisors (3025280700).

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

1428297156 is a wasteful number, since it uses less digits than its factorization.

1428297156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 238 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 1428297156 is about 37792.8188416794. The cubic root of 1428297156 is about 1126.1757994199.

The spelling of 1428297156 in words is "one billion, four hundred twenty-eight million, two hundred ninety-seven thousand, one hundred fifty-six".