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120620253 = 31317181931
BaseRepresentation
bin1110011000010…
…00010011011101
322101222010212210
413030020103131
5221334322003
615545151033
72663153355
oct714102335
9271863783
10120620253
11620a5866
123448b479
131bcb3340
141203bb65
15a8c9503
hex73084dd

120620253 has 16 divisors (see below), whose sum is σ = 183387456. Its totient is φ = 69861120.

The previous prime is 120620243. The next prime is 120620261. The reversal of 120620253 is 352026021.

It is not a de Polignac number, because 120620253 - 25 = 120620221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120620243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90303 + ... + 91628.

It is an arithmetic number, because the mean of its divisors is an integer number (11461716).

Almost surely, 2120620253 is an apocalyptic number.

120620253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

120620253 is a deficient number, since it is larger than the sum of its proper divisors (62767203).

120620253 is a wasteful number, since it uses less digits than its factorization.

120620253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181964.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 120620253 is about 10982.7252082532. The cubic root of 120620253 is about 494.0907745681.

Adding to 120620253 its reverse (352026021), we get a palindrome (472646274).

The spelling of 120620253 in words is "one hundred twenty million, six hundred twenty thousand, two hundred fifty-three".

Divisors: 1 3 13 17 39 51 221 663 181931 545793 2365103 3092827 7095309 9278481 40206751 120620253