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193071025 = 52723972
BaseRepresentation
bin10111000001000…
…00011110110001
3111110022000122201
423200200132301
5343411233100
631054103201
74533035200
oct1340403661
9443260581
10193071025
1199a90134
12547aab01
1330ccc514
141b8db237
1511e3b36a
hexb8207b1

193071025 has 27 divisors (see below), whose sum is σ = 279198369. Its totient is φ = 132058080.

The previous prime is 193071001. The next prime is 193071029. The reversal of 193071025 is 520170391.

The square root of 193071025 is 13895.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 194481 + 192876544 = 441^2 + 13888^2 .

It is not a de Polignac number, because 193071025 - 27 = 193070897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 193070984 and 193071002.

It is not an unprimeable number, because it can be changed into a prime (193071029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 486127 + ... + 486523.

Almost surely, 2193071025 is an apocalyptic number.

193071025 is the 13895-th square number.

193071025 is the 6948-th centered octagonal number.

It is an amenable number.

193071025 is a deficient number, since it is larger than the sum of its proper divisors (86127344).

193071025 is an frugal number, since it uses more digits than its factorization.

193071025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The cubic root of 193071025 is about 577.9705378437.

The spelling of 193071025 in words is "one hundred ninety-three million, seventy-one thousand, twenty-five".

Divisors: 1 5 7 25 35 49 175 245 397 1225 1985 2779 9925 13895 19453 69475 97265 157609 486325 788045 1103263 3940225 5516315 7722841 27581575 38614205 193071025