155983420 has 12 divisors (see below), whose sum is σ = 327565224. Its totient is φ = 62393360.

The previous prime is 155983417. The next prime is 155983439. The reversal of 155983420 is 24389551.

It is a self number, because there is not a number n which added to its sum of digits gives 155983420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3899566 + ... + 3899605.

It is an arithmetic number, because the mean of its divisors is an integer number (27297102).

Almost surely, 2^155983420 is an apocalyptic number.

155983420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155983420 is an abundant number, since it is smaller than the sum of its proper divisors (171581804).

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

155983420 is a wasteful number, since it uses less digits than its factorization.

155983420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7799180 (or 7799178 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 155983420 is about 12489.3322479627. The cubic root of 155983420 is about 538.3021892371.

The spelling of 155983420 in words is "one hundred fifty-five million, nine hundred eighty-three thousand, four hundred twenty".