136780000 has 120 divisors (see below), whose sum is σ = 384964272. Its totient is φ = 46848000.

The previous prime is 136779989. The next prime is 136780051. The reversal of 136780000 is 87631.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 139512 + ... + 140488.

Almost surely, 2^136780000 is an apocalyptic number.

136780000 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 136780000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192482136).

136780000 is an abundant number, since it is smaller than the sum of its proper divisors (248184272).

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

136780000 is an frugal number, since it uses more digits than its factorization.

136780000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 136780000 is about 11695.2982005591. The cubic root of 136780000 is about 515.2375816495.

The spelling of 136780000 in words is "one hundred thirty-six million, seven hundred eighty thousand".