155024430 has 128 divisors (see below), whose sum is σ = 426746880. Its totient is φ = 35696640.

The previous prime is 155024423. The next prime is 155024461. The reversal of 155024430 is 34420551.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 155024430.

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, 928207 + ... + 928373.

It is an arithmetic number, because the mean of its divisors is an integer number (3333960).

Almost surely, 2^155024430 is an apocalyptic number.

155024430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155024430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213373440).

155024430 is an abundant number, since it is smaller than the sum of its proper divisors (271722450).

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

155024430 is a wasteful number, since it uses less digits than its factorization.

155024430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 155024430 is about 12450.8806917423. The cubic root of 155024430 is about 537.1967555761.

Adding to 155024430 its reverse (34420551), we get a palindrome (189444981).

The spelling of 155024430 in words is "one hundred fifty-five million, twenty-four thousand, four hundred thirty".