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190053988 = 2247513497
BaseRepresentation
bin10110101001111…
…11111001100100
3111020121202001121
423110333321210
5342123211423
630505303324
74465301155
oct1324777144
9436552047
10190053988
119830a413
1253794b44
13304b41a7
141b35392c
1511a4245d
hexb53fe64

190053988 has 6 divisors (see below), whose sum is σ = 332594486. Its totient is φ = 95026992.

The previous prime is 190053959. The next prime is 190054001. The reversal of 190053988 is 889350091.

It can be written as a sum of positive squares in only one way, i.e., 184090624 + 5963364 = 13568^2 + 2442^2 .

It is a super-2 number, since 2×1900539882 = 72241036709408288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23756745 + ... + 23756752.

Almost surely, 2190053988 is an apocalyptic number.

It is an amenable number.

190053988 is a deficient number, since it is larger than the sum of its proper divisors (142540498).

190053988 is a wasteful number, since it uses less digits than its factorization.

190053988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47513501 (or 47513499 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 190053988 is about 13786.0069635845. The cubic root of 190053988 is about 574.9441538705.

The spelling of 190053988 in words is "one hundred ninety million, fifty-three thousand, nine hundred eighty-eight".

Divisors: 1 2 4 47513497 95026994 190053988