155010240 has 448 divisors, whose sum is σ = 684702720. Its totient is φ = 32071680.

The previous prime is 155010239. The next prime is 155010257. The reversal of 155010240 is 42010551.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 63 ways as a sum of consecutive naturals, for example, 665164 + ... + 665396.

Almost surely, 2^155010240 is an apocalyptic number.

155010240 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 155010240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342351360).

155010240 is an abundant number, since it is smaller than the sum of its proper divisors (529692480).

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

155010240 is a wasteful number, since it uses less digits than its factorization.

155010240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 155010240 is about 12450.3108394931. The cubic root of 155010240 is about 537.1803644938.

Adding to 155010240 its reverse (42010551), we get a palindrome (197020791).

The spelling of 155010240 in words is "one hundred fifty-five million, ten thousand, two hundred forty".