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1372247285 = 51631998461
BaseRepresentation
bin101000111001010…
…1101010011110101
310112122010101101112
41101302231103311
510302243403120
6344100004405
746001623643
oct12162552365
93478111345
101372247285
11644663772
12323690705
1318b3b2656
14d036a193
1580711bc5
hex51cad4f5

1372247285 has 16 divisors (see below), whose sum is σ = 1665321600. Its totient is φ = 1085451840.

The previous prime is 1372247273. The next prime is 1372247299. The reversal of 1372247285 is 5827422731.

It is not a de Polignac number, because 1372247285 - 24 = 1372247269 is a prime.

It is a super-2 number, since 2×13722472852 = 3766125222379742450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157955 + ... + 166415.

It is an arithmetic number, because the mean of its divisors is an integer number (104082600).

Almost surely, 21372247285 is an apocalyptic number.

It is an amenable number.

1372247285 is a deficient number, since it is larger than the sum of its proper divisors (293074315).

1372247285 is a wasteful number, since it uses less digits than its factorization.

1372247285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8828.

The product of its digits is 188160, while the sum is 41.

The square root of 1372247285 is about 37043.8562382482. The cubic root of 1372247285 is about 1111.2474909505.

It can be divided in two parts, 137 and 2247285, that added together give a palindrome (2247422).

The spelling of 1372247285 in words is "one billion, three hundred seventy-two million, two hundred forty-seven thousand, two hundred eighty-five".

Divisors: 1 5 163 199 815 995 8461 32437 42305 162185 1379143 1683739 6895715 8418695 274449457 1372247285