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190192040 = 23528116921
BaseRepresentation
bin10110101011000…
…01100110101000
3111020212202102122
423111201212220
5342142121130
630512250412
74466414513
oct1325414650
9436782378
10190192040
11983a4105
1253840a08
1330531c8c
141b38bd7a
1511a6d2e5
hexb5619a8

190192040 has 32 divisors (see below), whose sum is σ = 429480360. Its totient is φ = 75801600.

The previous prime is 190192027. The next prime is 190192069. The reversal of 190192040 is 40291091.

It can be written as a sum of positive squares in 4 ways, for example, as 177475684 + 12716356 = 13322^2 + 3566^2 .

It is an unprimeable number.

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, 2780 + ... + 19700.

Almost surely, 2190192040 is an apocalyptic number.

190192040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190192040 is an abundant number, since it is smaller than the sum of its proper divisors (239288320).

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

190192040 is a wasteful number, since it uses less digits than its factorization.

190192040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17213 (or 17209 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 190192040 is about 13791.0130157288. The cubic root of 190192040 is about 575.0833300781.

The spelling of 190192040 in words is "one hundred ninety million, one hundred ninety-two thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 281 562 1124 1405 2248 2810 5620 11240 16921 33842 67684 84605 135368 169210 338420 676840 4754801 9509602 19019204 23774005 38038408 47548010 95096020 190192040