1428730157156 has 6 divisors (see below), whose sum is σ = 2500277775030. Its totient is φ = 714365078576.

The previous prime is 1428730157047. The next prime is 1428730157161. The reversal of 1428730157156 is 6517510378241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1211285141056 + 217445016100 = 1100584^2 + 466310^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178591269641 + ... + 178591269648.

It is an arithmetic number, because the mean of its divisors is an integer number (416712962505).

Almost surely, 2^{1428730157156} is an apocalyptic number.

It is an amenable number.

1428730157156 is a deficient number, since it is larger than the sum of its proper divisors (1071547617874).

1428730157156 is a wasteful number, since it uses less digits than its factorization.

1428730157156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357182539293 (or 357182539291 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 1428730157156 in words is "one trillion, four hundred twenty-eight billion, seven hundred thirty million, one hundred fifty-seven thousand, one hundred fifty-six".