155240430 has 32 divisors (see below), whose sum is σ = 394494624. Its totient is φ = 38962176.

The previous prime is 155240381. The next prime is 155240441. The reversal of 155240430 is 34042551.

155240430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155240430² = 48199182213169800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155240430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151687 + ... + 152706.

It is an arithmetic number, because the mean of its divisors is an integer number (12327957).

Almost surely, 2^155240430 is an apocalyptic number.

155240430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155240430 is an abundant number, since it is smaller than the sum of its proper divisors (239254194).

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

155240430 is a wasteful number, since it uses less digits than its factorization.

155240430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304420.

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

The square root of 155240430 is about 12459.5517575874. The cubic root of 155240430 is about 537.4461370219.

Adding to 155240430 its reverse (34042551), we get a palindrome (189282981).

The spelling of 155240430 in words is "one hundred fifty-five million, two hundred forty thousand, four hundred thirty".