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213420412 = 22173308411
BaseRepresentation
bin11001011100010…
…00100101111100
3112212120212202201
430232020211330
5414113423122
633102201244
75201020642
oct1456104574
9485525681
10213420412
11aa519a07
125b583224
13352a598a
14204b7192
1513b0aa27
hexcb8897c

213420412 has 12 divisors (see below), whose sum is σ = 375645816. Its totient is φ = 106093040.

The previous prime is 213420341. The next prime is 213420413. The reversal of 213420412 is 214024312.

213420412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213420412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213420413) 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, 153514 + ... + 154897.

It is an arithmetic number, because the mean of its divisors is an integer number (31303818).

Almost surely, 2213420412 is an apocalyptic number.

It is an amenable number.

213420412 is a deficient number, since it is larger than the sum of its proper divisors (162225404).

213420412 is a wasteful number, since it uses less digits than its factorization.

213420412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308588 (or 308586 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 213420412 is about 14608.9154970518. The cubic root of 213420412 is about 597.6019207215.

Adding to 213420412 its reverse (214024312), we get a palindrome (427444724).

The spelling of 213420412 in words is "two hundred thirteen million, four hundred twenty thousand, four hundred twelve".

Divisors: 1 2 4 173 346 692 308411 616822 1233644 53355103 106710206 213420412