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190242008 = 231121491319
BaseRepresentation
bin10110101011011…
…01110011011000
3111020222021222022
423111231303120
5342200221013
630513314012
74500013265
oct1325556330
9436867868
10190242008
1198428700
1253865908
133054b948
141b3a226c
1511a7d008
hexb56dcd8

190242008 has 48 divisors (see below), whose sum is σ = 395010000. Its totient is φ = 85828160.

The previous prime is 190242007. The next prime is 190242023. The reversal of 190242008 is 800242091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190242007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143573 + ... + 144891.

It is an arithmetic number, because the mean of its divisors is an integer number (8229375).

Almost surely, 2190242008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190242008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197505000).

190242008 is an abundant number, since it is smaller than the sum of its proper divisors (204767992).

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

190242008 is a wasteful number, since it uses less digits than its factorization.

190242008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496 (or 1481 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 190242008 is about 13792.8245113175. The cubic root of 190242008 is about 575.1336883855.

Adding to 190242008 its reverse (800242091), we get a palindrome (990484099).

The spelling of 190242008 in words is "one hundred ninety million, two hundred forty-two thousand, eight".

Divisors: 1 2 4 8 11 22 44 88 121 149 242 298 484 596 968 1192 1319 1639 2638 3278 5276 6556 10552 13112 14509 18029 29018 36058 58036 72116 116072 144232 159599 196531 319198 393062 638396 786124 1276792 1572248 2161841 4323682 8647364 17294728 23780251 47560502 95121004 190242008