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3213937972 = 227711616669
BaseRepresentation
bin1011111110010000…
…1100110100110100
322021222120222001201
42333210030310310
523040232003342
61250525502244
7142434010360
oct27744146464
98258528051
103213937972
1113aa203193
12758411984
133c2b0b95b
14226bb62a0
1513c252db7
hexbf90cd34

3213937972 has 24 divisors (see below), whose sum is σ = 6518413440. Its totient is φ = 1358001120.

The previous prime is 3213937933. The next prime is 3213937981. The reversal of 3213937972 is 2797393123.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806347 + ... + 810322.

It is an arithmetic number, because the mean of its divisors is an integer number (271600560).

Almost surely, 23213937972 is an apocalyptic number.

It is an amenable number.

3213937972 is an abundant number, since it is smaller than the sum of its proper divisors (3304475468).

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

3213937972 is a wasteful number, since it uses less digits than its factorization.

3213937972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616751 (or 1616749 counting only the distinct ones).

The product of its digits is 428652, while the sum is 46.

The square root of 3213937972 is about 56691.6040697386. The cubic root of 3213937972 is about 1475.7489976698.

The spelling of 3213937972 in words is "three billion, two hundred thirteen million, nine hundred thirty-seven thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 28 71 142 284 497 994 1988 1616669 3233338 6466676 11316683 22633366 45266732 114783499 229566998 459133996 803484493 1606968986 3213937972