65292240 has 160 divisors (see below), whose sum is σ = 230985216. Its totient is φ = 15114240.

The previous prime is 65292229. The next prime is 65292263. The reversal of 65292240 is 4229256.

65292240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 65292198 and 65292207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52425 + ... + 53655.

Almost surely, 2^65292240 is an apocalyptic number.

65292240 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 65292240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115492608).

65292240 is an abundant number, since it is smaller than the sum of its proper divisors (165692976).

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

65292240 is a wasteful number, since it uses less digits than its factorization.

65292240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 65292240 is about 8080.3613780573. The cubic root of 65292240 is about 402.6742478191.

The spelling of 65292240 in words is "sixty-five million, two hundred ninety-two thousand, two hundred forty".