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1989295 = 57115167
BaseRepresentation
bin111100101101010101111
310202001210121
413211222233
51002124140
6110345411
722623460
oct7455257
93661717
101989295
111139650
127bb267
135485c9
1439ad67
1529464a
hex1e5aaf

1989295 has 16 divisors (see below), whose sum is σ = 2976768. Its totient is φ = 1239840.

The previous prime is 1989277. The next prime is 1989307. The reversal of 1989295 is 5929891.

It is not a de Polignac number, because 1989295 - 25 = 1989263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2199 + ... + 2968.

It is an arithmetic number, because the mean of its divisors is an integer number (186048).

21989295 is an apocalyptic number.

1989295 is a deficient number, since it is larger than the sum of its proper divisors (987473).

1989295 is a wasteful number, since it uses less digits than its factorization.

1989295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190.

The product of its digits is 58320, while the sum is 43.

The square root of 1989295 is about 1410.4236952065. The cubic root of 1989295 is about 125.7669118142.

The spelling of 1989295 in words is "one million, nine hundred eighty-nine thousand, two hundred ninety-five".

Divisors: 1 5 7 11 35 55 77 385 5167 25835 36169 56837 180845 284185 397859 1989295