136881760 has 24 divisors (see below), whose sum is σ = 323383536. Its totient is φ = 54752640.

The previous prime is 136881749. The next prime is 136881761. The reversal of 136881760 is 67188631.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136881761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427596 + ... + 427915.

It is an arithmetic number, because the mean of its divisors is an integer number (13474314).

Almost surely, 2^136881760 is an apocalyptic number.

136881760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136881760 is an abundant number, since it is smaller than the sum of its proper divisors (186501776).

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

136881760 is an equidigital number, since it uses as much as digits as its factorization.

136881760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855526 (or 855518 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 136881760 is about 11699.6478579485. The cubic root of 136881760 is about 515.3653234721.

It can be divided in two parts, 136881 and 760, that added together give a square (137641 = 371²).

The spelling of 136881760 in words is "one hundred thirty-six million, eight hundred eighty-one thousand, seven hundred sixty".