236645340 has 144 divisors (see below), whose sum is σ = 707236992. Its totient is φ = 59076864.

The previous prime is 236645309. The next prime is 236645429. The reversal of 236645340 is 43546632.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3531987 + ... + 3532053.

It is an arithmetic number, because the mean of its divisors is an integer number (4911368).

Almost surely, 2^236645340 is an apocalyptic number.

236645340 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 236645340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353618496).

236645340 is an abundant number, since it is smaller than the sum of its proper divisors (470591652).

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

236645340 is a wasteful number, since it uses less digits than its factorization.

236645340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 236645340 is about 15383.2811844548. The cubic root of 236645340 is about 618.5374300925.

The spelling of 236645340 in words is "two hundred thirty-six million, six hundred forty-five thousand, three hundred forty".