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20829274 = 210414637
BaseRepresentation
bin100111101110…
…1010001011010
31110012020101121
41033131101122
520313014044
62022235454
7342021514
oct117352132
943166347
1020829274
1110837384
126b85b8a
134413a1b
142aa2bb4
151c66984
hex13dd45a

20829274 has 4 divisors (see below), whose sum is σ = 31243914. Its totient is φ = 10414636.

The previous prime is 20829269. The next prime is 20829313. The reversal of 20829274 is 47292802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47292802 = 223646401.

It can be written as a sum of positive squares in only one way, i.e., 14861025 + 5968249 = 3855^2 + 2443^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5207317 + ... + 5207320.

Almost surely, 220829274 is an apocalyptic number.

20829274 is a deficient number, since it is larger than the sum of its proper divisors (10414640).

20829274 is a wasteful number, since it uses less digits than its factorization.

20829274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10414639.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20829274 is about 4563.9099465261. The cubic root of 20829274 is about 275.1427314159.

The spelling of 20829274 in words is "twenty million, eight hundred twenty-nine thousand, two hundred seventy-four".

Divisors: 1 2 10414637 20829274