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472976213 = 1493174337
BaseRepresentation
bin11100001100010…
…000101101010101
31012221222200101112
4130030100231111
51432040214323
6114533304405
714502142253
oct3414205525
91187880345
10472976213
11222a8a036
12112495105
1376cb29a8
1446b5d5d3
152b7cb178
hex1c310b55

472976213 has 4 divisors (see below), whose sum is σ = 476150700. Its totient is φ = 469801728.

The previous prime is 472976191. The next prime is 472976219. The reversal of 472976213 is 312679274.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312679274 = 2156339637.

It can be written as a sum of positive squares in 2 ways, for example, as 98863249 + 374112964 = 9943^2 + 19342^2 .

It is a cyclic number.

It is not a de Polignac number, because 472976213 - 26 = 472976149 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 (472976219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1587020 + ... + 1587317.

It is an arithmetic number, because the mean of its divisors is an integer number (119037675).

Almost surely, 2472976213 is an apocalyptic number.

It is an amenable number.

472976213 is a deficient number, since it is larger than the sum of its proper divisors (3174487).

472976213 is a wasteful number, since it uses less digits than its factorization.

472976213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174486.

The product of its digits is 127008, while the sum is 41.

The square root of 472976213 is about 21748.0163003433. The cubic root of 472976213 is about 779.1356923080.

The spelling of 472976213 in words is "four hundred seventy-two million, nine hundred seventy-six thousand, two hundred thirteen".

Divisors: 1 149 3174337 472976213