155406030 has 32 divisors (see below), whose sum is σ = 401665824. Its totient is φ = 38253696.

The previous prime is 155406023. The next prime is 155406067. The reversal of 155406030 is 30604551.

155406030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 198849 + ... + 199628.

It is an arithmetic number, because the mean of its divisors is an integer number (12552057).

Almost surely, 2^155406030 is an apocalyptic number.

155406030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155406030 is an abundant number, since it is smaller than the sum of its proper divisors (246259794).

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

155406030 is a wasteful number, since it uses less digits than its factorization.

155406030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398500.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 155406030 is about 12466.1954902047. The cubic root of 155406030 is about 537.6371728499.

It can be divided in two parts, 15 and 5406030, that added together give a palindrome (5406045).

The spelling of 155406030 in words is "one hundred fifty-five million, four hundred six thousand, thirty".