136049220 has 120 divisors (see below), whose sum is σ = 430608024. Its totient is φ = 35956224.

The previous prime is 136049203. The next prime is 136049231. The reversal of 136049220 is 22940631.

It can be written as a sum of positive squares in 4 ways, for example, as 324 + 136048896 = 18^2 + 11664^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 221634 + ... + 222246.

It is the magic constant of a 648 × 648 magic square.

Almost surely, 2^136049220 is an apocalyptic number.

136049220 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 136049220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215304012).

136049220 is an abundant number, since it is smaller than the sum of its proper divisors (294558804).

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

136049220 is a wasteful number, since it uses less digits than its factorization.

136049220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 136049220 is about 11664.0138888806. The cubic root of 136049220 is about 514.3183491195.

Adding to 136049220 its reverse (22940631), we get a palindrome (158989851).

The spelling of 136049220 in words is "one hundred thirty-six million, forty-nine thousand, two hundred twenty".