157387478 has 8 divisors (see below), whose sum is σ = 236134872. Its totient is φ = 78675856.

The previous prime is 157387471. The next prime is 157387481. The reversal of 157387478 is 874783751.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157387471) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 10601 + ... + 20667.

It is an arithmetic number, because the mean of its divisors is an integer number (29516859).

Almost surely, 2^157387478 is an apocalyptic number.

157387478 is a deficient number, since it is larger than the sum of its proper divisors (78747394).

157387478 is a wasteful number, since it uses less digits than its factorization.

157387478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17886.

The product of its digits is 1317120, while the sum is 50.

The square root of 157387478 is about 12545.4166132496. The cubic root of 157387478 is about 539.9125121182.

The spelling of 157387478 in words is "one hundred fifty-seven million, three hundred eighty-seven thousand, four hundred seventy-eight".