157228839 has 12 divisors (see below), whose sum is σ = 227262672. Its totient is φ = 104748000.

The previous prime is 157228837. The next prime is 157228843. The reversal of 157228839 is 938822751.

It is a happy number.

It is not a de Polignac number, because 157228839 - 2¹ = 157228837 is a prime.

It is a super-4 number, since 4×157228839⁴ (a number of 34 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157228794 and 157228803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157228831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10414 + ... + 20564.

It is an arithmetic number, because the mean of its divisors is an integer number (18938556).

Almost surely, 2^157228839 is an apocalyptic number.

157228839 is a deficient number, since it is larger than the sum of its proper divisors (70033833).

157228839 is a wasteful number, since it uses less digits than its factorization.

157228839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11878 (or 11875 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 157228839 is about 12539.0924312727. The cubic root of 157228839 is about 539.7310491970.

The spelling of 157228839 in words is "one hundred fifty-seven million, two hundred twenty-eight thousand, eight hundred thirty-nine".