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1970394368 = 289779349
BaseRepresentation
bin111010101110001…
…1101010100000000
312002022122101221012
41311130131110000
513013410104433
6523304220052
766554034665
oct16534352400
95068571835
101970394368
119212664a8
1246ba6a628
132552aca37
1414998da6c
15b7eb5848
hex7571d500

1970394368 has 36 divisors (see below), whose sum is σ = 3973689300. Its totient is φ = 975028224.

The previous prime is 1970394341. The next prime is 1970394443. The reversal of 1970394368 is 8634930791.

It can be written as a sum of positive squares in 2 ways, for example, as 372953344 + 1597441024 = 19312^2 + 39968^2 .

It is a super-2 number, since 2×19703943682 = 7764907930892238848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14843 + ... + 64506.

Almost surely, 21970394368 is an apocalyptic number.

It is an amenable number.

1970394368 is an abundant number, since it is smaller than the sum of its proper divisors (2003294932).

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

1970394368 is an frugal number, since it uses more digits than its factorization.

1970394368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79462 (or 79448 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 1970394368 is about 44389.1244338070. The cubic root of 1970394368 is about 1253.6733266034.

The spelling of 1970394368 in words is "one billion, nine hundred seventy million, three hundred ninety-four thousand, three hundred sixty-eight".

Divisors: 1 2 4 8 16 32 64 97 128 194 256 388 776 1552 3104 6208 12416 24832 79349 158698 317396 634792 1269584 2539168 5078336 7696853 10156672 15393706 20313344 30787412 61574824 123149648 246299296 492598592 985197184 1970394368