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18970596 = 22324331217
BaseRepresentation
bin100100001011…
…1011111100100
31022200210202200
41020113133210
514324024341
61514334500
7320150601
oct110273744
938623680
1018970596
11a787987
12642a430
133c12a08
14273b6a8
1519eadb6
hex12177e4

18970596 has 36 divisors (see below), whose sum is σ = 48103692. Its totient is φ = 6303744.

The previous prime is 18970579. The next prime is 18970613. The reversal of 18970596 is 69507981.

It is an interprime number because it is at equal distance from previous prime (18970579) and next prime (18970613).

It can be written as a sum of positive squares in 2 ways, for example, as 4040100 + 14930496 = 2010^2 + 3864^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14980 + ... + 16196.

Almost surely, 218970596 is an apocalyptic number.

It is an amenable number.

18970596 is an abundant number, since it is smaller than the sum of its proper divisors (29133096).

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

18970596 is a wasteful number, since it uses less digits than its factorization.

18970596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 18970596 is about 4355.5247674649. The cubic root of 18970596 is about 266.7024417281.

The spelling of 18970596 in words is "eighteen million, nine hundred seventy thousand, five hundred ninety-six".

Divisors: 1 2 3 4 6 9 12 18 36 433 866 1217 1299 1732 2434 2598 3651 3897 4868 5196 7302 7794 10953 14604 15588 21906 43812 526961 1053922 1580883 2107844 3161766 4742649 6323532 9485298 18970596