157920727 has 8 divisors (see below), whose sum is σ = 163205120. Its totient is φ = 152648280.

The previous prime is 157920713. The next prime is 157920731. The reversal of 157920727 is 727029751.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157920727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157920727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157920767) 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 7 ways as a sum of consecutive naturals, for example, 29758 + ... + 34660.

It is an arithmetic number, because the mean of its divisors is an integer number (20400640).

Almost surely, 2^157920727 is an apocalyptic number.

157920727 is a deficient number, since it is larger than the sum of its proper divisors (5284393).

157920727 is a wasteful number, since it uses less digits than its factorization.

157920727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 157920727 is about 12566.6513837219. The cubic root of 157920727 is about 540.5215890818.

The spelling of 157920727 in words is "one hundred fifty-seven million, nine hundred twenty thousand, seven hundred twenty-seven".