253728786 has 16 divisors (see below), whose sum is σ = 507757824. Its totient is φ = 84526224.

The previous prime is 253728677. The next prime is 253728821. The reversal of 253728786 is 687827352.

253728786 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661 + ... + 22536.

It is an arithmetic number, because the mean of its divisors is an integer number (31734864).

Almost surely, 2^253728786 is an apocalyptic number.

253728786 is an abundant number, since it is smaller than the sum of its proper divisors (254029038).

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

253728786 is a wasteful number, since it uses less digits than its factorization.

253728786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25025.

The product of its digits is 1128960, while the sum is 48.

The square root of 253728786 is about 15928.8664380112. The cubic root of 253728786 is about 633.0770653560.

The spelling of 253728786 in words is "two hundred fifty-three million, seven hundred twenty-eight thousand, seven hundred eighty-six".