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192947902 = 27132110433
BaseRepresentation
bin10111000000000…
…10011010111110
3111110001202202121
423200002122332
5343343313102
631051313154
74532013220
oct1340023276
9443052677
10192947902
1199a06684
125474b7ba
1330c88474
141b8a8410
1511e14b37
hexb8026be

192947902 has 16 divisors (see below), whose sum is σ = 331049952. Its totient is φ = 82621440.

The previous prime is 192947899. The next prime is 192947903. The reversal of 192947902 is 209749291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (192947903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13278 + ... + 23710.

It is an arithmetic number, because the mean of its divisors is an integer number (20690622).

Almost surely, 2192947902 is an apocalyptic number.

192947902 is a deficient number, since it is larger than the sum of its proper divisors (138102050).

192947902 is a wasteful number, since it uses less digits than its factorization.

192947902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11763.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 192947902 is about 13890.5688148470. The cubic root of 192947902 is about 577.8476528438.

The spelling of 192947902 in words is "one hundred ninety-two million, nine hundred forty-seven thousand, nine hundred two".

Divisors: 1 2 7 14 1321 2642 9247 10433 18494 20866 73031 146062 13781993 27563986 96473951 192947902