235220424 has 32 divisors (see below), whose sum is σ = 589278240. Its totient is φ = 78243200.

The previous prime is 235220411. The next prime is 235220429. The reversal of 235220424 is 424022532.

It is a happy number.

235220424 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 235220394 and 235220403.

It is not an unprimeable number, because it can be changed into a prime (235220429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1804 + ... + 21764.

It is an arithmetic number, because the mean of its divisors is an integer number (18414945).

Almost surely, 2^235220424 is an apocalyptic number.

235220424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

235220424 is an abundant number, since it is smaller than the sum of its proper divisors (354057816).

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

235220424 is a wasteful number, since it uses less digits than its factorization.

235220424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20461 (or 20457 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 235220424 is about 15336.8974698275. The cubic root of 235220424 is about 617.2934605135.

Adding to 235220424 its reverse (424022532), we get a palindrome (659242956).

The spelling of 235220424 in words is "two hundred thirty-five million, two hundred twenty thousand, four hundred twenty-four".