156536820 has 288 divisors, whose sum is σ = 568391040. Its totient is φ = 35458560.

The previous prime is 156536803. The next prime is 156536869. The reversal of 156536820 is 28635651.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2144304 + ... + 2144376.

It is an arithmetic number, because the mean of its divisors is an integer number (1973580).

Almost surely, 2^156536820 is an apocalyptic number.

156536820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156536820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284195520).

156536820 is an abundant number, since it is smaller than the sum of its proper divisors (411854220).

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

156536820 is a wasteful number, since it uses less digits than its factorization.

156536820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 156536820 is about 12511.4675398212. The cubic root of 156536820 is about 538.9380363689.

The spelling of 156536820 in words is "one hundred fifty-six million, five hundred thirty-six thousand, eight hundred twenty".