136823730 has 16 divisors (see below), whose sum is σ = 328377024. Its totient is φ = 36486320.

The previous prime is 136823723. The next prime is 136823741. The reversal of 136823730 is 37328631.

It is a super-2 number, since 2×136823730² = 37441466182225800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 136823691 and 136823700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2280366 + ... + 2280425.

It is an arithmetic number, because the mean of its divisors is an integer number (20523564).

Almost surely, 2^136823730 is an apocalyptic number.

136823730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136823730 is an abundant number, since it is smaller than the sum of its proper divisors (191553294).

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

136823730 is a wasteful number, since it uses less digits than its factorization.

136823730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4560801.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 136823730 is about 11697.1676058779. The cubic root of 136823730 is about 515.2924847511.

The spelling of 136823730 in words is "one hundred thirty-six million, eight hundred twenty-three thousand, seven hundred thirty".