Search a number
-
+
70232020 = 2253511601
BaseRepresentation
bin1000010111110…
…10011111010100
311220011011012221
410023322133110
5120434411040
610545152124
71511651035
oct413723724
9156134187
1070232020
113670a3a1
121b62b644
1311720311
149482a8c
15627474a
hex42fa7d4

70232020 has 12 divisors (see below), whose sum is σ = 147487284. Its totient is φ = 28092800.

The previous prime is 70232009. The next prime is 70232021. The reversal of 70232020 is 2023207.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21399876 + 48832144 = 4626^2 + 6988^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70231985 and 70232003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70232021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1755781 + ... + 1755820.

It is an arithmetic number, because the mean of its divisors is an integer number (12290607).

Almost surely, 270232020 is an apocalyptic number.

It is an amenable number.

70232020 is an abundant number, since it is smaller than the sum of its proper divisors (77255264).

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

70232020 is a wasteful number, since it uses less digits than its factorization.

70232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511610 (or 3511608 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 70232020 is about 8380.4546416051. The cubic root of 70232020 is about 412.5833709662.

Adding to 70232020 its reverse (2023207), we get a palindrome (72255227).

The spelling of 70232020 in words is "seventy million, two hundred thirty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 3511601 7023202 14046404 17558005 35116010 70232020