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20214701 = 131554977
BaseRepresentation
bin100110100011…
…1001110101101
31102001000100122
41031013032231
520133332301
62001134325
7333551663
oct115071655
942030318
1020214701
1110457671
12692a3a5
13425a080
142982c33
151b9481b

20214701 has 4 divisors (see below), whose sum is σ = 21769692. Its totient is φ = 18659712.

The previous prime is 20214673. The next prime is 20214707. The reversal of 20214701 is 10741202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1716100 + 18498601 = 1310^2 + 4301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20214701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20214701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20214707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777476 + ... + 777501.

It is an arithmetic number, because the mean of its divisors is an integer number (5442423).

Almost surely, 220214701 is an apocalyptic number.

It is an amenable number.

20214701 is a deficient number, since it is larger than the sum of its proper divisors (1554991).

20214701 is a wasteful number, since it uses less digits than its factorization.

20214701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554990.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 20214701 is about 4496.0761781803. The cubic root of 20214701 is about 272.4096201688.

Adding to 20214701 its reverse (10741202), we get a palindrome (30955903).

The spelling of 20214701 in words is "twenty million, two hundred fourteen thousand, seven hundred one".

Divisors: 1 13 1554977 20214701