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20602514 = 210301257
BaseRepresentation
bin100111010010…
…1111010010010
31102202201100002
41032211322102
520233240024
62013330002
7340055432
oct116457222
942681302
1020602514
11106a1a79
126a96902
13436474a
142a442c2
151c1e6ae
hex13a5e92

20602514 has 4 divisors (see below), whose sum is σ = 30903774. Its totient is φ = 10301256.

The previous prime is 20602513. The next prime is 20602523. The reversal of 20602514 is 41520602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41520602 = 220760301.

It can be written as a sum of positive squares in only one way, i.e., 13446889 + 7155625 = 3667^2 + 2675^2 .

It is not an unprimeable number, because it can be changed into a prime (20602511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5150627 + ... + 5150630.

Almost surely, 220602514 is an apocalyptic number.

20602514 is a deficient number, since it is larger than the sum of its proper divisors (10301260).

20602514 is a wasteful number, since it uses less digits than its factorization.

20602514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10301259.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20602514 is about 4538.9992289050. Note that the first 3 decimals coincide. The cubic root of 20602514 is about 274.1406296764.

The spelling of 20602514 in words is "twenty million, six hundred two thousand, five hundred fourteen".

Divisors: 1 2 10301257 20602514