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214404870 = 2357146829
BaseRepresentation
bin11001100011110…
…00111100000110
3112221102220012010
430301320330012
5414341423440
633135235050
75212261041
oct1461707406
9487386163
10214404870
11100031609
125b978a86
133555bab4
1420691c58
1513c52580
hexcc78f06

214404870 has 16 divisors (see below), whose sum is σ = 514571760. Its totient is φ = 57174624.

The previous prime is 214404847. The next prime is 214404871. The reversal of 214404870 is 78404412.

214404870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 7146829 = 214404870 / (2 + 1 + 4 + 4 + 0 + 4 + 8 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214404871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3573385 + ... + 3573444.

It is an arithmetic number, because the mean of its divisors is an integer number (32160735).

Almost surely, 2214404870 is an apocalyptic number.

214404870 is an abundant number, since it is smaller than the sum of its proper divisors (300166890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

214404870 is a wasteful number, since it uses less digits than its factorization.

214404870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7146839.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 214404870 is about 14642.5704710614. The cubic root of 214404870 is about 598.5193770427.

The spelling of 214404870 in words is "two hundred fourteen million, four hundred four thousand, eight hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 7146829 14293658 21440487 35734145 42880974 71468290 107202435 214404870