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48867981 = 319857333
BaseRepresentation
bin1011101001101…
…0101010001101
310101221202021020
42322122222031
5100002233411
64503224353
71132241151
oct272325215
9111852236
1048867981
1125648268
12144480b9
13a180086
1466c1061
154454606
hex2e9aa8d

48867981 has 8 divisors (see below), whose sum is σ = 68586720. Its totient is φ = 30863952.

The previous prime is 48867971. The next prime is 48868003. The reversal of 48867981 is 18976884.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-48867981 is a prime.

It is a super-2 number, since 2×488679812 = 4776159134032722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48867901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428610 + ... + 428723.

It is an arithmetic number, because the mean of its divisors is an integer number (8573340).

Almost surely, 248867981 is an apocalyptic number.

It is an amenable number.

48867981 is a deficient number, since it is larger than the sum of its proper divisors (19718739).

48867981 is a wasteful number, since it uses less digits than its factorization.

48867981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857355.

The product of its digits is 774144, while the sum is 51.

The square root of 48867981 is about 6990.5637111752. The cubic root of 48867981 is about 365.6016373998.

The spelling of 48867981 in words is "forty-eight million, eight hundred sixty-seven thousand, nine hundred eighty-one".

Divisors: 1 3 19 57 857333 2571999 16289327 48867981