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164470121 = 1721114583
BaseRepresentation
bin10011100110110…
…01110101101001
3102110110221120222
421303121311221
5314101020441
624153055425
74034654504
oct1163316551
9373427528
10164470121
1184925922
12470b7575
13280c72ca
1417bb413b
15e68bd4b
hex9cd9d69

164470121 has 8 divisors (see below), whose sum is σ = 174265344. Its totient is φ = 154688320.

The previous prime is 164470093. The next prime is 164470123. The reversal of 164470121 is 121074461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164470121 - 26 = 164470057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164470123) 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, 33596 + ... + 38178.

It is an arithmetic number, because the mean of its divisors is an integer number (21783168).

Almost surely, 2164470121 is an apocalyptic number.

It is an amenable number.

164470121 is a deficient number, since it is larger than the sum of its proper divisors (9795223).

164470121 is a wasteful number, since it uses less digits than its factorization.

164470121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 164470121 is about 12824.5904807912. The cubic root of 164470121 is about 547.8928975783.

The spelling of 164470121 in words is "one hundred sixty-four million, four hundred seventy thousand, one hundred twenty-one".

Divisors: 1 17 2111 4583 35887 77911 9674713 164470121