236313840 has 80 divisors (see below), whose sum is σ = 837232128. Its totient is φ = 54014208.

The previous prime is 236313823. The next prime is 236313859. The reversal of 236313840 is 48313632.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 236313798 and 236313807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68652 + ... + 72011.

Almost surely, 2^236313840 is an apocalyptic number.

236313840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

236313840 is an abundant number, since it is smaller than the sum of its proper divisors (600918288).

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

236313840 is a wasteful number, since it uses less digits than its factorization.

236313840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140686 (or 140680 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 236313840 is about 15372.5027240199. The cubic root of 236313840 is about 618.2484731000.

The spelling of 236313840 in words is "two hundred thirty-six million, three hundred thirteen thousand, eight hundred forty".