236172340 has 48 divisors (see below), whose sum is σ = 512709120. Its totient is φ = 91324800.

The previous prime is 236172329. The next prime is 236172367. The reversal of 236172340 is 43271632.

It is a super-4 number, since 4×236172340⁴ (a number of 35 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 236172299 and 236172308.

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 15 ways as a sum of consecutive naturals, for example, 85501 + ... + 88219.

It is an arithmetic number, because the mean of its divisors is an integer number (10681440).

Almost surely, 2^236172340 is an apocalyptic number.

236172340 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 236172340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256354560).

236172340 is an abundant number, since it is smaller than the sum of its proper divisors (276536780).

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

236172340 is a wasteful number, since it uses less digits than its factorization.

236172340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872 (or 2870 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 236172340 is about 15367.8996613070. The cubic root of 236172340 is about 618.1250501898.

The spelling of 236172340 in words is "two hundred thirty-six million, one hundred seventy-two thousand, three hundred forty".