236064640 has 256 divisors, whose sum is σ = 705024000. Its totient is φ = 73801728.

The previous prime is 236064637. The next prime is 236064643. The reversal of 236064640 is 46460632.

It is an interprime number because it is at equal distance from previous prime (236064637) and next prime (236064643).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (236064643) 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, 2988121 + ... + 2988199.

It is an arithmetic number, because the mean of its divisors is an integer number (2754000).

Almost surely, 2^236064640 is an apocalyptic number.

236064640 is a gapful number since it is divisible by the number (20) 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 236064640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352512000).

236064640 is an abundant number, since it is smaller than the sum of its proper divisors (468959360).

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

236064640 is a wasteful number, since it uses less digits than its factorization.

236064640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 236064640 is about 15364.3952044980. The cubic root of 236064640 is about 618.0310761735.

The spelling of 236064640 in words is "two hundred thirty-six million, sixty-four thousand, six hundred forty".