155373240 has 128 divisors (see below), whose sum is σ = 525035520. Its totient is φ = 36441600.

The previous prime is 155373223. The next prime is 155373247. The reversal of 155373240 is 42373551.

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

It is a junction number, because it is equal to n+sod(n) for n = 155373198 and 155373207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155373247) 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 31 ways as a sum of consecutive naturals, for example, 39022 + ... + 42818.

It is an arithmetic number, because the mean of its divisors is an integer number (4101840).

Almost surely, 2^155373240 is an apocalyptic number.

155373240 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 155373240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262517760).

155373240 is an abundant number, since it is smaller than the sum of its proper divisors (369662280).

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

155373240 is a wasteful number, since it uses less digits than its factorization.

155373240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853 (or 3849 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 155373240 is about 12464.8802641662. The cubic root of 155373240 is about 537.5993571509.

The spelling of 155373240 in words is "one hundred fifty-five million, three hundred seventy-three thousand, two hundred forty".