155346840 has 96 divisors (see below), whose sum is σ = 550789200. Its totient is φ = 37658880.

The previous prime is 155346811. The next prime is 155346857. The reversal of 155346840 is 48643551.

It is a happy number.

155346840 is a `hidden beast` number, since 1 + 553 + 4 + 68 + 40 = 666.

155346840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 155346795 and 155346804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15655 + ... + 23574.

Almost surely, 2^155346840 is an apocalyptic number.

155346840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155346840 is an abundant number, since it is smaller than the sum of its proper divisors (395442360).

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

155346840 is a wasteful number, since it uses less digits than its factorization.

155346840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39257 (or 39250 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 155346840 is about 12463.8212439043. The cubic root of 155346840 is about 537.5689069762.

The spelling of 155346840 in words is "one hundred fifty-five million, three hundred forty-six thousand, eight hundred forty".