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48801978 = 2323318191
BaseRepresentation
bin1011101000101…
…0100010111010
310101211101201200
42322022202322
544443130403
64501555030
71131544551
oct272124272
9111741650
1048801978
1125602715
1214415a76
13a159014
1466a4d98
15443eca3
hex2e8a8ba

48801978 has 24 divisors (see below), whose sum is σ = 106070016. Its totient is φ = 16216200.

The previous prime is 48801959. The next prime is 48801997. The reversal of 48801978 is 87910884.

48801978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (48801959) and next prime (48801997).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1863 + ... + 10053.

It is an arithmetic number, because the mean of its divisors is an integer number (4419584).

Almost surely, 248801978 is an apocalyptic number.

48801978 is an abundant number, since it is smaller than the sum of its proper divisors (57268038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

48801978 is a wasteful number, since it uses less digits than its factorization.

48801978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8530 (or 8527 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 48801978 is about 6985.8412521328. The cubic root of 48801978 is about 365.4369646322.

The spelling of 48801978 in words is "forty-eight million, eight hundred one thousand, nine hundred seventy-eight".

Divisors: 1 2 3 6 9 18 331 662 993 1986 2979 5958 8191 16382 24573 49146 73719 147438 2711221 5422442 8133663 16267326 24400989 48801978