157321248 has 96 divisors (see below), whose sum is σ = 474800256. Its totient is φ = 44679168.

The previous prime is 157321237. The next prime is 157321253. The reversal of 157321248 is 842123751.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129090 + ... + 130302.

It is an arithmetic number, because the mean of its divisors is an integer number (4945836).

Almost surely, 2^157321248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157321248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237400128).

157321248 is an abundant number, since it is smaller than the sum of its proper divisors (317479008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157321248 is a wasteful number, since it uses less digits than its factorization.

157321248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1418 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 157321248 is about 12542.7767260683. The cubic root of 157321248 is about 539.8367682214.

Adding to 157321248 its reverse (842123751), we get a palindrome (999444999).

The spelling of 157321248 in words is "one hundred fifty-seven million, three hundred twenty-one thousand, two hundred forty-eight".