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2587028990 = 257213478641
BaseRepresentation
bin1001101000110010…
…1110110111111110
320200021221200121112
42122030232313332
520244234411430
61104413002022
7121052245400
oct23214566776
96607850545
102587028990
111108346197
12602483312
13322c80cb0
141a7826b70
151021bc195
hex9a32edfe

2587028990 has 96 divisors (see below), whose sum is σ = 5958417024. Its totient is φ = 801239040.

The previous prime is 2587028981. The next prime is 2587028993. The reversal of 2587028990 is 998207852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2587028993) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 295070 + ... + 303710.

It is an arithmetic number, because the mean of its divisors is an integer number (62066844).

Almost surely, 22587028990 is an apocalyptic number.

2587028990 is an abundant number, since it is smaller than the sum of its proper divisors (3371388034).

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

2587028990 is a wasteful number, since it uses less digits than its factorization.

2587028990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8722 (or 8715 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 2587028990 is about 50862.8448870096. The cubic root of 2587028990 is about 1372.7783831080.

The spelling of 2587028990 in words is "two billion, five hundred eighty-seven million, twenty-eight thousand, nine hundred ninety".

Divisors: 1 2 5 7 10 13 14 26 35 47 49 65 70 91 94 98 130 182 235 245 329 455 470 490 611 637 658 910 1222 1274 1645 2303 3055 3185 3290 4277 4606 6110 6370 8554 8641 11515 17282 21385 23030 29939 42770 43205 59878 60487 86410 112333 120974 149695 224666 299390 302435 406127 423409 561665 604870 786331 812254 846818 1123330 1572662 2030635 2117045 2842889 3931655 4061270 4234090 5279651 5504317 5685778 7863310 10559302 11008634 14214445 19900223 26398255 27521585 28428890 36957557 39800446 52796510 55043170 73915114 99501115 184787785 199002230 258702899 369575570 517405798 1293514495 2587028990