155403480 has 64 divisors (see below), whose sum is σ = 470527200. Its totient is φ = 41060736.

The previous prime is 155403449. The next prime is 155403497. The reversal of 155403480 is 84304551.

It is a super-2 number, since 2×155403480² = 48300483192220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1425666 + ... + 1425774.

Almost surely, 2^155403480 is an apocalyptic number.

155403480 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 155403480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235263600).

155403480 is an abundant number, since it is smaller than the sum of its proper divisors (315123720).

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

155403480 is an frugal number, since it uses more digits than its factorization.

155403480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 155403480 is about 12466.0932131923. The cubic root of 155403480 is about 537.6342322040.

The spelling of 155403480 in words is "one hundred fifty-five million, four hundred three thousand, four hundred eighty".