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49860431 = 311608401
BaseRepresentation
bin1011111000110…
…0111101001111
310110211011122122
42332030331033
5100231013211
64540403155
71143543455
oct276147517
9113734578
1049860431
1126165975
12148464bb
13a439a1a
14689c9d5
15459d6db
hex2f8cf4f

49860431 has 4 divisors (see below), whose sum is σ = 51468864. Its totient is φ = 48252000.

The previous prime is 49860413. The next prime is 49860443. The reversal of 49860431 is 13406894.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-49860431 is a prime.

It is a super-2 number, since 2×498604312 = 4972125159011522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49860391 and 49860400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49860451) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 804170 + ... + 804231.

It is an arithmetic number, because the mean of its divisors is an integer number (12867216).

Almost surely, 249860431 is an apocalyptic number.

49860431 is a deficient number, since it is larger than the sum of its proper divisors (1608433).

49860431 is a wasteful number, since it uses less digits than its factorization.

49860431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608432.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 49860431 is about 7061.1918965568. The cubic root of 49860431 is about 368.0600460265.

The spelling of 49860431 in words is "forty-nine million, eight hundred sixty thousand, four hundred thirty-one".

Divisors: 1 31 1608401 49860431