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20433494 = 210216747
BaseRepresentation
bin100110111110…
…0101001010110
31102110010111002
41031330221112
520212332434
62005543302
7335452604
oct115745126
942403432
1020433494
1110596a94
126a14b32
134305833
1429dc874
151bd957e
hex137ca56

20433494 has 4 divisors (see below), whose sum is σ = 30650244. Its totient is φ = 10216746.

The previous prime is 20433481. The next prime is 20433533. The reversal of 20433494 is 49433402.

Adding to 20433494 its reverse (49433402), we get a palindrome (69866896).

It is a semiprime because it is the product of two primes.

It is a super-4 number, since 4×204334944 (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5108372 + ... + 5108375.

It is an arithmetic number, because the mean of its divisors is an integer number (7662561).

Almost surely, 220433494 is an apocalyptic number.

20433494 is a deficient number, since it is larger than the sum of its proper divisors (10216750).

20433494 is a wasteful number, since it uses less digits than its factorization.

20433494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10216749.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 20433494 is about 4520.3422436802. The cubic root of 20433494 is about 273.3889003956.

The spelling of 20433494 in words is "twenty million, four hundred thirty-three thousand, four hundred ninety-four".

Divisors: 1 2 10216747 20433494