Search a number
-
+
30551060 = 2251527553
BaseRepresentation
bin111010010001…
…0110000010100
32010111011011202
41310202300110
530310113220
63010452032
7520452101
oct164426024
963434152
1030551060
1116277511
12a294018
136438a67
1440b3aa8
152a37275
hex1d22c14

30551060 has 12 divisors (see below), whose sum is σ = 64157268. Its totient is φ = 12220416.

The previous prime is 30551051. The next prime is 30551141. The reversal of 30551060 is 6015503.

It can be written as a sum of positive squares in 2 ways, for example, as 4866436 + 25684624 = 2206^2 + 5068^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1527553 = 30551060 / (3 + 0 + 5 + 5 + 1 + 0 + 6 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763757 + ... + 763796.

It is an arithmetic number, because the mean of its divisors is an integer number (5346439).

Almost surely, 230551060 is an apocalyptic number.

It is an amenable number.

30551060 is an abundant number, since it is smaller than the sum of its proper divisors (33606208).

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

30551060 is a wasteful number, since it uses less digits than its factorization.

30551060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527562 (or 1527560 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 30551060 is about 5527.3013306676. The cubic root of 30551060 is about 312.6142430302.

Adding to 30551060 its reverse (6015503), we get a palindrome (36566563).

The spelling of 30551060 in words is "thirty million, five hundred fifty-one thousand, sixty".

Divisors: 1 2 4 5 10 20 1527553 3055106 6110212 7637765 15275530 30551060