155362240 has 224 divisors, whose sum is σ = 447690240. Its totient is φ = 50688000.

The previous prime is 155362219. The next prime is 155362241. The reversal of 155362240 is 42263551.

It is a junction number, because it is equal to n+sod(n) for n = 155362199 and 155362208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155362241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1538190 + ... + 1538290.

Almost surely, 2^155362240 is an apocalyptic number.

155362240 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 155362240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223845120).

155362240 is an abundant number, since it is smaller than the sum of its proper divisors (292328000).

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

155362240 is a wasteful number, since it uses less digits than its factorization.

155362240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 155362240 is about 12464.4390166586. The cubic root of 155362240 is about 537.5866699973.

The spelling of 155362240 in words is "one hundred fifty-five million, three hundred sixty-two thousand, two hundred forty".