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19142965 = 531123503
BaseRepresentation
bin100100100000…
…1100100110101
31100000120012201
41021001210311
514400033330
61522144501
7321466252
oct111014465
940016181
1019142965
11a895436
1264b2131
133c732ca
142784429
151a31eca
hex1241935

19142965 has 8 divisors (see below), whose sum is σ = 23712768. Its totient is φ = 14820240.

The previous prime is 19142953. The next prime is 19142971. The reversal of 19142965 is 56924191.

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

It is not a de Polignac number, because 19142965 - 25 = 19142933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61597 + ... + 61906.

It is an arithmetic number, because the mean of its divisors is an integer number (2964096).

Almost surely, 219142965 is an apocalyptic number.

It is an amenable number.

19142965 is a deficient number, since it is larger than the sum of its proper divisors (4569803).

19142965 is a wasteful number, since it uses less digits than its factorization.

19142965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123539.

The product of its digits is 19440, while the sum is 37.

The square root of 19142965 is about 4375.2674203984. The cubic root of 19142965 is about 267.5077704675.

The spelling of 19142965 in words is "nineteen million, one hundred forty-two thousand, nine hundred sixty-five".

Divisors: 1 5 31 155 123503 617515 3828593 19142965