1428730157 has 16 divisors (see below), whose sum is σ = 1480550400. Its totient is φ = 1377820800.

The previous prime is 1428730097. The next prime is 1428730159. The reversal of 1428730157 is 7510378241.

It is a cyclic number.

It is not a de Polignac number, because 1428730157 - 2¹⁴ = 1428713773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428730157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428730159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1655108 + ... + 1655970.

It is an arithmetic number, because the mean of its divisors is an integer number (92534400).

Almost surely, 2^1428730157 is an apocalyptic number.

It is an amenable number.

1428730157 is a deficient number, since it is larger than the sum of its proper divisors (51820243).

1428730157 is a wasteful number, since it uses less digits than its factorization.

1428730157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 1428730157 is about 37798.5470223394. The cubic root of 1428730157 is about 1126.2895913286.

It can be divided in two parts, 14287 and 30157, that added together give a palindrome (44444).

The spelling of 1428730157 in words is "one billion, four hundred twenty-eight million, seven hundred thirty thousand, one hundred fifty-seven".