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47976980 = 2252398849
BaseRepresentation
bin1011011100000…
…1001000010100
310100021111001012
42313001020110
544240230410
64432151352
71121540402
oct267011024
9110244035
1047976980
11250998a7
1214098558
139c2a65c
14652c472
15432a605
hex2dc1214

47976980 has 12 divisors (see below), whose sum is σ = 100751700. Its totient is φ = 19190784.

The previous prime is 47976979. The next prime is 47976983. The reversal of 47976980 is 8967974.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14776336 + 33200644 = 3844^2 + 5762^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47976983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199405 + ... + 1199444.

It is an arithmetic number, because the mean of its divisors is an integer number (8395975).

Almost surely, 247976980 is an apocalyptic number.

It is an amenable number.

47976980 is an abundant number, since it is smaller than the sum of its proper divisors (52774720).

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

47976980 is a wasteful number, since it uses less digits than its factorization.

47976980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398858 (or 2398856 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 47976980 is about 6926.5417056421. The cubic root of 47976980 is about 363.3660118930.

The spelling of 47976980 in words is "forty-seven million, nine hundred seventy-six thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 2398849 4797698 9595396 11994245 23988490 47976980