155320716 has 12 divisors (see below), whose sum is σ = 362415032. Its totient is φ = 51773568.

The previous prime is 155320691. The next prime is 155320747. The reversal of 155320716 is 617023551.

155320716 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6471685 + ... + 6471708.

Almost surely, 2^155320716 is an apocalyptic number.

It is an amenable number.

155320716 is an abundant number, since it is smaller than the sum of its proper divisors (207094316).

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

155320716 is a wasteful number, since it uses less digits than its factorization.

155320716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12943400 (or 12943398 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 155320716 is about 12462.7732066342. The cubic root of 155320716 is about 537.5387717480.

The spelling of 155320716 in words is "one hundred fifty-five million, three hundred twenty thousand, seven hundred sixteen".