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19420967 = 371274133
BaseRepresentation
bin100101000010…
…1011100100111
31100112200120002
41022011130213
514432432332
61532131515
7324034616
oct112053447
940480502
1019420967
11aa65295
126606b9b
13403c9c7
14281787d
151a89562
hex1285727

19420967 has 8 divisors (see below), whose sum is σ = 20107776. Its totient is φ = 18742752.

The previous prime is 19420943. The next prime is 19420979. The reversal of 19420967 is 76902491.

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

It is a cyclic number.

It is not a de Polignac number, because 19420967 - 26 = 19420903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19420967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19420927) 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, 2633 + ... + 6765.

It is an arithmetic number, because the mean of its divisors is an integer number (2513472).

Almost surely, 219420967 is an apocalyptic number.

19420967 is a deficient number, since it is larger than the sum of its proper divisors (686809).

19420967 is a wasteful number, since it uses less digits than its factorization.

19420967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 19420967 is about 4406.9226224203. The cubic root of 19420967 is about 268.7965045177.

The spelling of 19420967 in words is "nineteen million, four hundred twenty thousand, nine hundred sixty-seven".

Divisors: 1 37 127 4133 4699 152921 524891 19420967