155622730 has 32 divisors (see below), whose sum is σ = 298209600. Its totient is φ = 58303872.

The previous prime is 155622721. The next prime is 155622737. The reversal of 155622730 is 37226551.

It is a junction number, because it is equal to n+sod(n) for n = 155622692 and 155622701.

It is not an unprimeable number, because it can be changed into a prime (155622737) 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 15 ways as a sum of consecutive naturals, for example, 12309 + ... + 21511.

It is an arithmetic number, because the mean of its divisors is an integer number (9319050).

Almost surely, 2^155622730 is an apocalyptic number.

155622730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155622730 is a deficient number, since it is larger than the sum of its proper divisors (142586870).

155622730 is a wasteful number, since it uses less digits than its factorization.

155622730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9318.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 155622730 is about 12474.8839673962. The cubic root of 155622730 is about 537.8869526575.

The spelling of 155622730 in words is "one hundred fifty-five million, six hundred twenty-two thousand, seven hundred thirty".