155033340 has 192 divisors, whose sum is σ = 565125120. Its totient is φ = 30792960.

The previous prime is 155033339. The next prime is 155033357. The reversal of 155033340 is 43330551.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 155033340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 105531 + ... + 106989.

It is an arithmetic number, because the mean of its divisors is an integer number (2943360).

Almost surely, 2^155033340 is an apocalyptic number.

155033340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155033340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282562560).

155033340 is an abundant number, since it is smaller than the sum of its proper divisors (410091780).

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

155033340 is a wasteful number, since it uses less digits than its factorization.

155033340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 155033340 is about 12451.2384926159. The cubic root of 155033340 is about 537.2070471398.

Adding to 155033340 its reverse (43330551), we get a palindrome (198363891).

The spelling of 155033340 in words is "one hundred fifty-five million, thirty-three thousand, three hundred forty".