237911982 has 64 divisors (see below), whose sum is σ = 597915648. Its totient is φ = 61308000.

The previous prime is 237911981. The next prime is 237912007. The reversal of 237911982 is 289119732.

It is a super-2 number, since 2×237911982² = 113204222358336648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (237911981) 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, 58557 + ... + 62487.

It is an arithmetic number, because the mean of its divisors is an integer number (9342432).

Almost surely, 2^237911982 is an apocalyptic number.

237911982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 237911982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298957824).

237911982 is an abundant number, since it is smaller than the sum of its proper divisors (360003666).

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

237911982 is a wasteful number, since it uses less digits than its factorization.

237911982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4085.

The product of its digits is 54432, while the sum is 42.

The square root of 237911982 is about 15424.3956769787. The cubic root of 237911982 is about 619.6390389371.

It can be divided in two parts, 237 and 911982, that added together give a palindrome (912219).

The spelling of 237911982 in words is "two hundred thirty-seven million, nine hundred eleven thousand, nine hundred eighty-two".