155283390 has 96 divisors (see below), whose sum is σ = 431308800. Its totient is φ = 38646720.

The previous prime is 155283383. The next prime is 155283431. The reversal of 155283390 is 93382551.

155283390 is a `hidden beast` number, since 15 + 528 + 33 + 90 = 666.

155283390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155283390² = 48225862419784200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120771 + ... + 122049.

It is an arithmetic number, because the mean of its divisors is an integer number (4492800).

Almost surely, 2^155283390 is an apocalyptic number.

155283390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155283390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215654400).

155283390 is an abundant number, since it is smaller than the sum of its proper divisors (276025410).

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

155283390 is a wasteful number, since it uses less digits than its factorization.

155283390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 155283390 is about 12461.2756168861. The cubic root of 155283390 is about 537.4957086371.

The spelling of 155283390 in words is "one hundred fifty-five million, two hundred eighty-three thousand, three hundred ninety".