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30202201 = 102129581
BaseRepresentation
bin111001100110…
…1100101011001
32002211102122001
41303031211121
530212432301
62555201001
7514500031
oct163154531
962742561
1030202201
11160593a7
12a146161
136346033
1440228c1
1529b8c01
hex1ccd959

30202201 has 4 divisors (see below), whose sum is σ = 30232804. Its totient is φ = 30171600.

The previous prime is 30202189. The next prime is 30202213. The reversal of 30202201 is 10220203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10220203 = 71460029.

It is an interprime number because it is at equal distance from previous prime (30202189) and next prime (30202213).

It can be written as a sum of positive squares in 2 ways, for example, as 20115225 + 10086976 = 4485^2 + 3176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30202201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30202241) 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, 13770 + ... + 15811.

It is an arithmetic number, because the mean of its divisors is an integer number (7558201).

Almost surely, 230202201 is an apocalyptic number.

It is an amenable number.

30202201 is a deficient number, since it is larger than the sum of its proper divisors (30603).

30202201 is a wasteful number, since it uses less digits than its factorization.

30202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30602.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 30202201 is about 5495.6529184438. The cubic root of 30202201 is about 311.4197830695.

Adding to 30202201 its reverse (10220203), we get a palindrome (40422404).

It can be divided in two parts, 30202 and 201, that added together give a palindrome (30403).

The spelling of 30202201 in words is "thirty million, two hundred two thousand, two hundred one".

Divisors: 1 1021 29581 30202201