153838 has 4 divisors (see below), whose sum is σ = 230760. Its totient is φ = 76918.

The previous prime is 153817. The next prime is 153841. The reversal of 153838 is 838351.

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

It is a super-2 number, since 2×153838² = 47332260488, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

153838 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38458 + ... + 38461.

It is an arithmetic number, because the mean of its divisors is an integer number (57690).

2¹⁵³⁸³⁸ is an apocalyptic number.

153838 is a deficient number, since it is larger than the sum of its proper divisors (76922).

153838 is an equidigital number, since it uses as much as digits as its factorization.

153838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76921.

The product of its digits is 2880, while the sum is 28.

The square root of 153838 is about 392.2218759835. The cubic root of 153838 is about 53.5822823299.

The spelling of 153838 in words is "one hundred fifty-three thousand, eight hundred thirty-eight".