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11937002640 = 2435297116741
BaseRepresentation
bin10110001111000000…
…00011010010010000
31010210220120120012220
423013200003102100
5143421333041030
65252255221040
7601544563653
oct130740032220
933726516186
1011937002640
115076143842
122391817780
1311830a8494
148134dd89a
1549ce79a10
hex2c7803490

11937002640 has 80 divisors (see below), whose sum is σ = 37019374656. Its totient is φ = 3181939200.

The previous prime is 11937002639. The next prime is 11937002653. The reversal of 11937002640 is 4620073911.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704670 + ... + 721410.

Almost surely, 211937002640 is an apocalyptic number.

11937002640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11937002640 is an abundant number, since it is smaller than the sum of its proper divisors (25082372016).

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

11937002640 is a wasteful number, since it uses less digits than its factorization.

11937002640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19728 (or 19722 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The spelling of 11937002640 in words is "eleven billion, nine hundred thirty-seven million, two thousand, six hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 2971 5942 8913 11884 14855 16741 17826 23768 29710 33482 35652 44565 47536 50223 59420 66964 71304 83705 89130 100446 118840 133928 142608 167410 178260 200892 237680 251115 267856 334820 356520 401784 502230 669640 713040 803568 1004460 1339280 2008920 4017840 49737511 99475022 149212533 198950044 248687555 298425066 397900088 497375110 596850132 746062665 795800176 994750220 1193700264 1492125330 1989500440 2387400528 2984250660 3979000880 5968501320 11937002640