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11657990 = 251165799
BaseRepresentation
bin101100011110…
…001100000110
3210221021202102
4230132030012
510441023430
61053512102
7201043211
oct54361406
923837672
1011657990
116642903
123aa2632
132552426
141796778
151054345
hexb1e306

11657990 has 8 divisors (see below), whose sum is σ = 20984400. Its totient is φ = 4663192.

The previous prime is 11657969. The next prime is 11657993. The reversal of 11657990 is 9975611.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11657993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582890 + ... + 582909.

It is an arithmetic number, because the mean of its divisors is an integer number (2623050).

Almost surely, 211657990 is an apocalyptic number.

11657990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11657990 is a deficient number, since it is larger than the sum of its proper divisors (9326410).

11657990 is a wasteful number, since it uses less digits than its factorization.

11657990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165806.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 11657990 is about 3414.3798851329. The cubic root of 11657990 is about 226.7468310262.

The spelling of 11657990 in words is "eleven million, six hundred fifty-seven thousand, nine hundred ninety".

Divisors: 1 2 5 10 1165799 2331598 5828995 11657990