153220234 has 4 divisors (see below), whose sum is σ = 229830354. Its totient is φ = 76610116.

The previous prime is 153220229. The next prime is 153220283. The reversal of 153220234 is 432022351.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 100701225 + 52519009 = 10035^2 + 7247^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38305057 + ... + 38305060.

Almost surely, 2^153220234 is an apocalyptic number.

153220234 is a deficient number, since it is larger than the sum of its proper divisors (76610120).

153220234 is an equidigital number, since it uses as much as digits as its factorization.

153220234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76610119.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 153220234 is about 12378.2161073395. The cubic root of 153220234 is about 535.1046279779.

Adding to 153220234 its reverse (432022351), we get a palindrome (585242585).

The spelling of 153220234 in words is "one hundred fifty-three million, two hundred twenty thousand, two hundred thirty-four".