155430540 has 72 divisors (see below), whose sum is σ = 473561088. Its totient is φ = 41264640.

The previous prime is 155430511. The next prime is 155430547. The reversal of 155430540 is 45034551.

It is not an unprimeable number, because it can be changed into a prime (155430547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41589 + ... + 45171.

Almost surely, 2^155430540 is an apocalyptic number.

155430540 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 155430540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236780544).

155430540 is an abundant number, since it is smaller than the sum of its proper divisors (318130548).

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

155430540 is a wasteful number, since it uses less digits than its factorization.

155430540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3839 (or 3834 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 155430540 is about 12467.1785099917. The cubic root of 155430540 is about 537.6654360054.

The spelling of 155430540 in words is "one hundred fifty-five million, four hundred thirty thousand, five hundred forty".