155374020 has 144 divisors (see below), whose sum is σ = 500834880. Its totient is φ = 38880000.

The previous prime is 155374019. The next prime is 155374031. The reversal of 155374020 is 20473551.

It is a happy number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 618895 + ... + 619145.

It is an arithmetic number, because the mean of its divisors is an integer number (3478020).

Almost surely, 2^155374020 is an apocalyptic number.

155374020 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 155374020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250417440).

155374020 is an abundant number, since it is smaller than the sum of its proper divisors (345460860).

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

155374020 is a wasteful number, since it uses less digits than its factorization.

155374020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 155374020 is about 12464.9115520328. The cubic root of 155374020 is about 537.6002567627.

The spelling of 155374020 in words is "one hundred fifty-five million, three hundred seventy-four thousand, twenty".