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4972213 = 40912157
BaseRepresentation
bin10010111101111010110101
3100100121121001
4102331322311
52233102323
6254323301
760156151
oct22757265
910317531
104972213
112896774
1217b9531
13105124c
14936061
156833ad
hex4bdeb5

4972213 has 4 divisors (see below), whose sum is σ = 4984780. Its totient is φ = 4959648.

The previous prime is 4972207. The next prime is 4972223. The reversal of 4972213 is 3122794.

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 2289169 + 2683044 = 1513^2 + 1638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-4972213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4972223) 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, 5670 + ... + 6487.

It is an arithmetic number, because the mean of its divisors is an integer number (1246195).

Almost surely, 24972213 is an apocalyptic number.

It is an amenable number.

4972213 is a deficient number, since it is larger than the sum of its proper divisors (12567).

4972213 is a wasteful number, since it uses less digits than its factorization.

4972213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12566.

The product of its digits is 3024, while the sum is 28.

The square root of 4972213 is about 2229.8459588052. The cubic root of 4972213 is about 170.6802387041.

The spelling of 4972213 in words is "four million, nine hundred seventy-two thousand, two hundred thirteen".

Divisors: 1 409 12157 4972213