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20424633 = 317557719
BaseRepresentation
bin100110111101…
…0011110111001
31102102200022220
41031322132321
520212042013
62005434253
7335415015
oct115723671
942380286
1020424633
1110590369
126a0b989
1343017a8
1429d9545
151bd6b23
hex137a7b9

20424633 has 16 divisors (see below), whose sum is σ = 28926720. Its totient is φ = 12774656.

The previous prime is 20424631. The next prime is 20424653. The reversal of 20424633 is 33642402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20424633 - 21 = 20424631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20424631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28048 + ... + 28766.

It is an arithmetic number, because the mean of its divisors is an integer number (1807920).

Almost surely, 220424633 is an apocalyptic number.

It is an amenable number.

20424633 is a deficient number, since it is larger than the sum of its proper divisors (8502087).

20424633 is a wasteful number, since it uses less digits than its factorization.

20424633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 20424633 is about 4519.3620124969. The cubic root of 20424633 is about 273.3493762479.

The spelling of 20424633 in words is "twenty million, four hundred twenty-four thousand, six hundred thirty-three".

Divisors: 1 3 17 51 557 719 1671 2157 9469 12223 28407 36669 400483 1201449 6808211 20424633