157231748 has 6 divisors (see below), whose sum is σ = 275155566. Its totient is φ = 78615872.

The previous prime is 157231729. The next prime is 157231751. The reversal of 157231748 is 847132751.

It can be written as a sum of positive squares in only one way, i.e., 96983104 + 60248644 = 9848^2 + 7762^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19653965 + ... + 19653972.

It is an arithmetic number, because the mean of its divisors is an integer number (45859261).

Almost surely, 2^157231748 is an apocalyptic number.

It is an amenable number.

157231748 is a deficient number, since it is larger than the sum of its proper divisors (117923818).

157231748 is a wasteful number, since it uses less digits than its factorization.

157231748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39307941 (or 39307939 counting only the distinct ones).

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

The square root of 157231748 is about 12539.2084279671. The cubic root of 157231748 is about 539.7343778228.

It can be divided in two parts, 15723 and 1748, that added together give a palindrome (17471).

The spelling of 157231748 in words is "one hundred fifty-seven million, two hundred thirty-one thousand, seven hundred forty-eight".