155403846 has 72 divisors (see below), whose sum is σ = 376949664. Its totient is φ = 47764080.

The previous prime is 155403841. The next prime is 155403881. The reversal of 155403846 is 648304551.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 155403846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155403841) 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 35 ways as a sum of consecutive naturals, for example, 170131 + ... + 171041.

It is an arithmetic number, because the mean of its divisors is an integer number (5235412).

Almost surely, 2^155403846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155403846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188474832).

155403846 is an abundant number, since it is smaller than the sum of its proper divisors (221545818).

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

155403846 is an frugal number, since it uses more digits than its factorization.

155403846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950 (or 929 counting only the distinct ones).

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

The square root of 155403846 is about 12466.1078930033. The cubic root of 155403846 is about 537.6346542752.

The spelling of 155403846 in words is "one hundred fifty-five million, four hundred three thousand, eight hundred forty-six".