Search a number
-
+
2470788 = 223268633
BaseRepresentation
bin1001011011001110000100
311122112021200
421123032010
51113031123
6124542500
730000315
oct11331604
94575250
102470788
111438381
129b1a30
13686808
1448460c
1533c143
hex25b384

2470788 has 18 divisors (see below), whose sum is σ = 6245694. Its totient is φ = 823584.

The previous prime is 2470781. The next prime is 2470789. The reversal of 2470788 is 8870742.

It can be written as a sum of positive squares in only one way, i.e., 2304324 + 166464 = 1518^2 + 408^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×24707882 = 12209586681888, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 68633 = 2470788 / (2 + 4 + 7 + 0 + 7 + 8 + 8).

It is not an unprimeable number, because it can be changed into a prime (2470781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34281 + ... + 34352.

It is an arithmetic number, because the mean of its divisors is an integer number (346983).

22470788 is an apocalyptic number.

It is an amenable number.

2470788 is an abundant number, since it is smaller than the sum of its proper divisors (3774906).

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

2470788 is a wasteful number, since it uses less digits than its factorization.

2470788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68643 (or 68638 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 2470788 is about 1571.8740407552. The cubic root of 2470788 is about 135.1901846217.

The spelling of 2470788 in words is "two million, four hundred seventy thousand, seven hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 68633 137266 205899 274532 411798 617697 823596 1235394 2470788