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872458290 = 23451197919
BaseRepresentation
bin110100000000001…
…010100000110010
32020210200110210000
4310000022200302
53241322131130
6222323450430
730422526114
oct6400124062
92223613700
10872458290
11408530910
12204226a16
1310b9a2612
1483c2b3b4
15518db260
hex3400a832

872458290 has 80 divisors (see below), whose sum is σ = 2559237120. Its totient is φ = 211502880.

The previous prime is 872458277. The next prime is 872458331. The reversal of 872458290 is 92854278.

It is a super-2 number, since 2×8724582902 = 1522366935579448200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40050 + ... + 57869.

It is an arithmetic number, because the mean of its divisors is an integer number (31990464).

Almost surely, 2872458290 is an apocalyptic number.

872458290 is an abundant number, since it is smaller than the sum of its proper divisors (1686778830).

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

872458290 is a wasteful number, since it uses less digits than its factorization.

872458290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97949 (or 97940 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 872458290 is about 29537.4049300205. The cubic root of 872458290 is about 955.5385758105.

The spelling of 872458290 in words is "eight hundred seventy-two million, four hundred fifty-eight thousand, two hundred ninety".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 27 30 33 45 54 55 66 81 90 99 110 135 162 165 198 270 297 330 405 495 594 810 891 990 1485 1782 2970 4455 8910 97919 195838 293757 489595 587514 881271 979190 1077109 1468785 1762542 2154218 2643813 2937570 3231327 4406355 5287626 5385545 6462654 7931439 8812710 9693981 10771090 13219065 15862878 16156635 19387962 26438130 29081943 32313270 39657195 48469905 58163886 79314390 87245829 96939810 145409715 174491658 290819430 436229145 872458290