428019292157 has 6 divisors (see below), whose sum is σ = 454677933498. Its totient is φ = 402841686464.

The previous prime is 428019292139. The next prime is 428019292159. The reversal of 428019292157 is 751292910824.

It can be written as a sum of positive squares in 3 ways, for example, as 145626955321 + 282392336836 = 381611^2 + 531406^2 .

It is not a de Polignac number, because 428019292157 - 2⁶ = 428019292093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428019292159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 740517518 + ... + 740518095.

It is an arithmetic number, because the mean of its divisors is an integer number (75779655583).

Almost surely, 2^428019292157 is an apocalyptic number.

It is an amenable number.

428019292157 is a deficient number, since it is larger than the sum of its proper divisors (26658641341).

428019292157 is a wasteful number, since it uses less digits than its factorization.

428019292157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481035647 (or 1481035630 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 428019292157 in words is "four hundred twenty-eight billion, nineteen million, two hundred ninety-two thousand, one hundred fifty-seven".