215728048 has 30 divisors (see below), whose sum is σ = 421421316. Its totient is φ = 106981056.

The previous prime is 215728043. The next prime is 215728057. The reversal of 215728048 is 840827512.

It is a junction number, because it is equal to n+sod(n) for n = 215727998 and 215728016.

It is not an unprimeable number, because it can be changed into a prime (215728043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 394111 + ... + 394657.

Almost surely, 2^215728048 is an apocalyptic number.

It is an amenable number.

215728048 is a deficient number, since it is larger than the sum of its proper divisors (205693268).

215728048 is an equidigital number, since it uses as much as digits as its factorization.

215728048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 215728048 is about 14687.6835477893. The cubic root of 215728048 is about 599.7480868403.

The spelling of 215728048 in words is "two hundred fifteen million, seven hundred twenty-eight thousand, forty-eight".