65144226 has 48 divisors (see below), whose sum is σ = 155114784. Its totient is φ = 18176256.

The previous prime is 65144213. The next prime is 65144227. The reversal of 65144226 is 62244156.

It is a super-2 number, since 2×65144226² = 8487540362278152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65144193 and 65144202.

It is not an unprimeable number, because it can be changed into a prime (65144227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10066 + ... + 15218.

It is an arithmetic number, because the mean of its divisors is an integer number (3231558).

Almost surely, 2^65144226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65144226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77557392).

65144226 is an abundant number, since it is smaller than the sum of its proper divisors (89970558).

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

65144226 is a wasteful number, since it uses less digits than its factorization.

65144226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5215 (or 5208 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 65144226 is about 8071.1973089499. The cubic root of 65144226 is about 402.3697373052.

The spelling of 65144226 in words is "sixty-five million, one hundred forty-four thousand, two hundred twenty-six".