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19079930 = 251907993
BaseRepresentation
bin100100011001…
…0001011111010
31022220100202002
41020302023322
514341024210
61520541002
7321114422
oct110621372
938810662
1019079930
11a852041
126481762
133c506cc
142769482
151a1d4a5
hex12322fa

19079930 has 8 divisors (see below), whose sum is σ = 34343892. Its totient is φ = 7631968.

The previous prime is 19079927. The next prime is 19079969. The reversal of 19079930 is 3997091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18826921 + 253009 = 4339^2 + 503^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 953987 + ... + 954006.

Almost surely, 219079930 is an apocalyptic number.

19079930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19079930 is a deficient number, since it is larger than the sum of its proper divisors (15263962).

19079930 is a wasteful number, since it uses less digits than its factorization.

19079930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908000.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 19079930 is about 4368.0579208614. The cubic root of 19079930 is about 267.2138261966.

The spelling of 19079930 in words is "nineteen million, seventy-nine thousand, nine hundred thirty".

Divisors: 1 2 5 10 1907993 3815986 9539965 19079930