Search a number
-
+
47970511 = 715571213
BaseRepresentation
bin1011011011111…
…1100011001111
310100021011011121
42312333203033
544240024021
64432101411
71121512501
oct266774317
9110234147
1047970511
1125094a56
1214094867
139c27724
146529d71
154328741
hex2dbf8cf

47970511 has 8 divisors (see below), whose sum is σ = 48773664. Its totient is φ = 47171040.

The previous prime is 47970509. The next prime is 47970529. The reversal of 47970511 is 11507974.

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

It is a cyclic number.

It is not a de Polignac number, because 47970511 - 21 = 47970509 is a prime.

It is a super-2 number, since 2×479705112 = 4602339851202242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47970541) 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, 38941 + ... + 40153.

It is an arithmetic number, because the mean of its divisors is an integer number (6096708).

Almost surely, 247970511 is an apocalyptic number.

47970511 is a deficient number, since it is larger than the sum of its proper divisors (803153).

47970511 is a wasteful number, since it uses less digits than its factorization.

47970511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 47970511 is about 6926.0747180492. The cubic root of 47970511 is about 363.3496796132.

The spelling of 47970511 in words is "forty-seven million, nine hundred seventy thousand, five hundred eleven".

Divisors: 1 71 557 1213 39547 86123 675641 47970511