1428892971 has 8 divisors (see below), whose sum is σ = 2078389824. Its totient is φ = 865995720.

The previous prime is 1428892961. The next prime is 1428892999. The reversal of 1428892971 is 1792988241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1428892971 - 2¹⁵ = 1428860203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1428892931) 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, 21649861 + ... + 21649926.

It is an arithmetic number, because the mean of its divisors is an integer number (259798728).

Almost surely, 2^1428892971 is an apocalyptic number.

1428892971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1428892971 is a deficient number, since it is larger than the sum of its proper divisors (649496853).

1428892971 is a wasteful number, since it uses less digits than its factorization.

1428892971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43299801.

The product of its digits is 580608, while the sum is 51.

The square root of 1428892971 is about 37800.7006681093. The cubic root of 1428892971 is about 1126.3323726165.

The spelling of 1428892971 in words is "one billion, four hundred twenty-eight million, eight hundred ninety-two thousand, nine hundred seventy-one".