155394030 has 32 divisors (see below), whose sum is σ = 406850688. Its totient is φ = 37671200.

The previous prime is 155394013. The next prime is 155394053. The reversal of 155394030 is 30493551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235116 + ... + 235775.

It is an arithmetic number, because the mean of its divisors is an integer number (12714084).

Almost surely, 2^155394030 is an apocalyptic number.

155394030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155394030 is an abundant number, since it is smaller than the sum of its proper divisors (251456658).

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

155394030 is a wasteful number, since it uses less digits than its factorization.

155394030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470912.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 155394030 is about 12465.7141793000. The cubic root of 155394030 is about 537.6233342360.

The spelling of 155394030 in words is "one hundred fifty-five million, three hundred ninety-four thousand, thirty".