Search a number
-
+
2900072 = 23751787
BaseRepresentation
bin1011000100000001101000
312110100011002
423010001220
51220300242
6142054132
733436010
oct13040150
95410132
102900072
11170095a
12b7a348
137a7026
14556c40
153c4432
hex2c4068

2900072 has 16 divisors (see below), whose sum is σ = 6214560. Its totient is φ = 1242864.

The previous prime is 2900069. The next prime is 2900077. The reversal of 2900072 is 2700092.

It is not an unprimeable number, because it can be changed into a prime (2900077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25838 + ... + 25949.

It is an arithmetic number, because the mean of its divisors is an integer number (388410).

22900072 is an apocalyptic number.

It is an amenable number.

2900072 is an abundant number, since it is smaller than the sum of its proper divisors (3314488).

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

2900072 is a wasteful number, since it uses less digits than its factorization.

2900072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51800 (or 51796 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 2900072 is about 1702.9597763893. The cubic root of 2900072 is about 142.6054948781.

Adding to 2900072 its sum of digits (20), we get a palindrome (2900092).

The spelling of 2900072 in words is "two million, nine hundred thousand, seventy-two".

Divisors: 1 2 4 7 8 14 28 56 51787 103574 207148 362509 414296 725018 1450036 2900072