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16992210320 = 2451491425521
BaseRepresentation
bin11111101001101000…
…01000110110010000
31121212012211201110222
433310310020312100
5234300001212240
611450042012212
71141040255531
oct176464106620
947765751428
1016992210320
11722a729128
1233627a7068
1317aa4c6927
14b72a52688
15696b88eb5
hex3f4d08d90

16992210320 has 40 divisors (see below), whose sum is σ = 39772063800. Its totient is φ = 6751262720.

The previous prime is 16992210281. The next prime is 16992210329. The reversal of 16992210320 is 2301229961.

It can be written as a sum of positive squares in 4 ways, for example, as 635846656 + 16356363664 = 25216^2 + 127892^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×169922103202 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16992210329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700841 + ... + 724680.

It is an arithmetic number, because the mean of its divisors is an integer number (994301595).

Almost surely, 216992210320 is an apocalyptic number.

16992210320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16992210320 is an abundant number, since it is smaller than the sum of its proper divisors (22779853480).

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

16992210320 is a wasteful number, since it uses less digits than its factorization.

16992210320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425683 (or 1425677 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 16992210320 in words is "sixteen billion, nine hundred ninety-two million, two hundred ten thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 149 298 596 745 1192 1490 2384 2980 5960 11920 1425521 2851042 5702084 7127605 11404168 14255210 22808336 28510420 57020840 114041680 212402629 424805258 849610516 1062013145 1699221032 2124026290 3398442064 4248052580 8496105160 16992210320