192748221 has 16 divisors (see below), whose sum is σ = 290395200. Its totient is φ = 126319824.

The previous prime is 192748219. The next prime is 192748243. The reversal of 192748221 is 122847291.

It is not a de Polignac number, because 192748221 - 2¹ = 192748219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (192748271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58906 + ... + 62091.

It is an arithmetic number, because the mean of its divisors is an integer number (18149700).

Almost surely, 2^192748221 is an apocalyptic number.

It is an amenable number.

192748221 is a deficient number, since it is larger than the sum of its proper divisors (97646979).

192748221 is a wasteful number, since it uses less digits than its factorization.

192748221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121065 (or 121059 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 192748221 is about 13883.3793076470. The cubic root of 192748221 is about 577.6482466435.

It can be divided in two parts, 19274 and 8221, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 192748221 in words is "one hundred ninety-two million, seven hundred forty-eight thousand, two hundred twenty-one".