157887722 has 8 divisors (see below), whose sum is σ = 237503556. Its totient is φ = 78719872.

The previous prime is 157887683. The next prime is 157887727. The reversal of 157887722 is 227788751.

157887722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 148084561 + 9803161 = 12169^2 + 3131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (157887727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111113 + ... + 112524.

Almost surely, 2^157887722 is an apocalyptic number.

157887722 is a deficient number, since it is larger than the sum of its proper divisors (79615834).

157887722 is a wasteful number, since it uses less digits than its factorization.

157887722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223992.

The product of its digits is 439040, while the sum is 47.

The square root of 157887722 is about 12565.3381172175. The cubic root of 157887722 is about 540.4839306136.

The spelling of 157887722 in words is "one hundred fifty-seven million, eight hundred eighty-seven thousand, seven hundred twenty-two".