155836240 has 40 divisors (see below), whose sum is σ = 414080640. Its totient is φ = 53429376.

The previous prime is 155836211. The next prime is 155836253. The reversal of 155836240 is 42638551.

155836240 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 155836196 and 155836205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138580 + ... + 139699.

It is an arithmetic number, because the mean of its divisors is an integer number (10352016).

Almost surely, 2^155836240 is an apocalyptic number.

155836240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155836240 is an abundant number, since it is smaller than the sum of its proper divisors (258244400).

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

155836240 is a wasteful number, since it uses less digits than its factorization.

155836240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278299 (or 278293 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 155836240 is about 12483.4386288394. The cubic root of 155836240 is about 538.1328288271.

The spelling of 155836240 in words is "one hundred fifty-five million, eight hundred thirty-six thousand, two hundred forty".