Search a number
-
+
47920995 = 3251064911
BaseRepresentation
bin1011011011001…
…1011101100011
310100011122020200
42312303131203
544231432440
64431040243
71121215233
oct266633543
9110148220
1047920995
1125060831
1214070083
139c0b025
146515cc3
154318c30
hex2db3763

47920995 has 12 divisors (see below), whose sum is σ = 83063136. Its totient is φ = 25557840.

The previous prime is 47920993. The next prime is 47921023. The reversal of 47920995 is 59902974.

It is not a de Polignac number, because 47920995 - 21 = 47920993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1064911 = 47920995 / (4 + 7 + 9 + 2 + 0 + 9 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 47920995.

It is not an unprimeable number, because it can be changed into a prime (47920993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532411 + ... + 532500.

It is an arithmetic number, because the mean of its divisors is an integer number (6921928).

Almost surely, 247920995 is an apocalyptic number.

47920995 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47920995 is a deficient number, since it is larger than the sum of its proper divisors (35142141).

47920995 is a wasteful number, since it uses less digits than its factorization.

47920995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064922 (or 1064919 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 47920995 is about 6922.4991874322. The cubic root of 47920995 is about 363.2246179428.

The spelling of 47920995 in words is "forty-seven million, nine hundred twenty thousand, nine hundred ninety-five".

Divisors: 1 3 5 9 15 45 1064911 3194733 5324555 9584199 15973665 47920995