155464920 has 160 divisors (see below), whose sum is σ = 562882320. Its totient is φ = 38257920.

The previous prime is 155464879. The next prime is 155464927. The reversal of 155464920 is 29464551.

155464920 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 649 + 2 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155464927) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 40275 + ... + 43965.

Almost surely, 2^155464920 is an apocalyptic number.

155464920 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 155464920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281441160).

155464920 is an abundant number, since it is smaller than the sum of its proper divisors (407417400).

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

155464920 is a wasteful number, since it uses less digits than its factorization.

155464920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727 (or 3714 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 155464920 is about 12468.5572541493. The cubic root of 155464920 is about 537.7050755232.

The spelling of 155464920 in words is "one hundred fifty-five million, four hundred sixty-four thousand, nine hundred twenty".