65242320 has 160 divisors (see below), whose sum is σ = 237734784. Its totient is φ = 14592000.

The previous prime is 65242273. The next prime is 65242327. The reversal of 65242320 is 2324256.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65242327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33370 + ... + 35270.

Almost surely, 2^65242320 is an apocalyptic number.

65242320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65242320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118867392).

65242320 is an abundant number, since it is smaller than the sum of its proper divisors (172492464).

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

65242320 is a wasteful number, since it uses less digits than its factorization.

65242320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941 (or 1935 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 65242320 is about 8077.2718166470. The cubic root of 65242320 is about 402.5715984406.

Adding to 65242320 its reverse (2324256), we get a palindrome (67566576).

The spelling of 65242320 in words is "sixty-five million, two hundred forty-two thousand, three hundred twenty".