156728453 has 8 divisors (see below), whose sum is σ = 181641600. Its totient is φ = 132446160.

The previous prime is 156728447. The next prime is 156728461. The reversal of 156728453 is 354827651.

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

It is not a de Polignac number, because 156728453 - 2⁴ = 156728437 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 156728453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156728483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157178 + ... + 158171.

It is an arithmetic number, because the mean of its divisors is an integer number (22705200).

Almost surely, 2^156728453 is an apocalyptic number.

It is an amenable number.

156728453 is a deficient number, since it is larger than the sum of its proper divisors (24913147).

156728453 is an equidigital number, since it uses as much as digits as its factorization.

156728453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315427.

The product of its digits is 201600, while the sum is 41.

The square root of 156728453 is about 12519.1234916826. The cubic root of 156728453 is about 539.1578700514.

The spelling of 156728453 in words is "one hundred fifty-six million, seven hundred twenty-eight thousand, four hundred fifty-three".