155340630 has 48 divisors (see below), whose sum is σ = 406401840. Its totient is φ = 41166144.

The previous prime is 155340613. The next prime is 155340631. The reversal of 155340630 is 36043551.

It is a super-2 number, since 2×155340630² = 48261422657593800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155340594 and 155340603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155340631) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 9376 + ... + 19964.

It is an arithmetic number, because the mean of its divisors is an integer number (8466705).

Almost surely, 2^155340630 is an apocalyptic number.

155340630 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 155340630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203200920).

155340630 is an abundant number, since it is smaller than the sum of its proper divisors (251061210).

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

155340630 is a wasteful number, since it uses less digits than its factorization.

155340630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10765 (or 10762 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 155340630 is about 12463.5721203835. The cubic root of 155340630 is about 537.5617437634.

The spelling of 155340630 in words is "one hundred fifty-five million, three hundred forty thousand, six hundred thirty".