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492044881 = 1925897099
BaseRepresentation
bin11101010101000…
…000001001010001
31021021212110200111
4131111000021101
52001430414011
6120454121321
715123212116
oct3525001121
91237773614
10492044881
11232823669
12118950241
137ac2b223
14494c490d
152d2e6121
hex1d540251

492044881 has 4 divisors (see below), whose sum is σ = 517942000. Its totient is φ = 466147764.

The previous prime is 492044869. The next prime is 492044887. The reversal of 492044881 is 188440294.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 492044881 - 213 = 492036689 is a prime.

It is a super-2 number, since 2×4920448812 = 484216329836608322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492044887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12948531 + ... + 12948568.

It is an arithmetic number, because the mean of its divisors is an integer number (129485500).

Almost surely, 2492044881 is an apocalyptic number.

It is an amenable number.

492044881 is a deficient number, since it is larger than the sum of its proper divisors (25897119).

492044881 is a wasteful number, since it uses less digits than its factorization.

492044881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25897118.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 492044881 is about 22182.0846856196. The cubic root of 492044881 is about 789.4686813546.

The spelling of 492044881 in words is "four hundred ninety-two million, forty-four thousand, eight hundred eighty-one".

Divisors: 1 19 25897099 492044881