Search a number
-
+
1015130740 = 225133904349
BaseRepresentation
bin111100100000011…
…010101001110100
32121202010222120211
4330200122221310
54034333140430
6244421435204
734104316561
oct7440325164
92552128524
101015130740
11481018828
12243b6bb04
131324071a0
1498b69868
155e1be72a
hex3c81aa74

1015130740 has 24 divisors (see below), whose sum is σ = 2295757800. Its totient is φ = 374817408.

The previous prime is 1015130719. The next prime is 1015130747. The reversal of 1015130740 is 470315101.

It can be written as a sum of positive squares in 4 ways, for example, as 75585636 + 939545104 = 8694^2 + 30652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015130747) 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, 1951915 + ... + 1952434.

It is an arithmetic number, because the mean of its divisors is an integer number (95656575).

Almost surely, 21015130740 is an apocalyptic number.

1015130740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1015130740 is an abundant number, since it is smaller than the sum of its proper divisors (1280627060).

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

1015130740 is a wasteful number, since it uses less digits than its factorization.

1015130740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904371 (or 3904369 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1015130740 is about 31861.1164273947. The cubic root of 1015130740 is about 1005.0183539960.

Adding to 1015130740 its reverse (470315101), we get a palindrome (1485445841).

The spelling of 1015130740 in words is "one billion, fifteen million, one hundred thirty thousand, seven hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 3904349 7808698 15617396 19521745 39043490 50756537 78086980 101513074 203026148 253782685 507565370 1015130740