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47900148 = 2233991679
BaseRepresentation
bin1011011010111…
…0010111110100
310100010120122120
42312232113310
544230301043
64430355540
71121100402
oct266562764
9110116576
1047900148
11250470aa
121405bbb0
139c016aa
14650c472
154312983
hex2dae5f4

47900148 has 12 divisors (see below), whose sum is σ = 111767040. Its totient is φ = 15966712.

The previous prime is 47900147. The next prime is 47900161. The reversal of 47900148 is 84100974.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47900147) 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, 1995828 + ... + 1995851.

It is an arithmetic number, because the mean of its divisors is an integer number (9313920).

Almost surely, 247900148 is an apocalyptic number.

It is an amenable number.

47900148 is an abundant number, since it is smaller than the sum of its proper divisors (63866892).

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

47900148 is a wasteful number, since it uses less digits than its factorization.

47900148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991686 (or 3991684 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 47900148 is about 6920.9932813145. The cubic root of 47900148 is about 363.1719392793.

The spelling of 47900148 in words is "forty-seven million, nine hundred thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 12 3991679 7983358 11975037 15966716 23950074 47900148