1428587145 has 32 divisors (see below), whose sum is σ = 2541801600. Its totient is φ = 761285952.

The previous prime is 1428587141. The next prime is 1428587159. The reversal of 1428587145 is 5417858241.

1428587145 is a `hidden beast` number, since 1 + 4 + 28 + 587 + 1 + 45 = 666.

It is not a de Polignac number, because 1428587145 - 2² = 1428587141 is a prime.

It is a super-2 number, since 2×1428587145² = 4081722461718502050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1428587145.

It is not an unprimeable number, because it can be changed into a prime (1428587141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193339 + ... + 200591.

It is an arithmetic number, because the mean of its divisors is an integer number (79431300).

Almost surely, 2^1428587145 is an apocalyptic number.

1428587145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1428587145 is a deficient number, since it is larger than the sum of its proper divisors (1113214455).

1428587145 is a wasteful number, since it uses less digits than its factorization.

1428587145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8726 (or 8720 counting only the distinct ones).

The product of its digits is 358400, while the sum is 45.

The square root of 1428587145 is about 37796.6552091584. The cubic root of 1428587145 is about 1126.2520105671.

The spelling of 1428587145 in words is "one billion, four hundred twenty-eight million, five hundred eighty-seven thousand, one hundred forty-five".