136793890 has 16 divisors (see below), whose sum is σ = 248997240. Its totient is φ = 54102400.

The previous prime is 136793869. The next prime is 136793911. The reversal of 136793890 is 98397631.

It is an interprime number because it is at equal distance from previous prime (136793869) and next prime (136793911).

It can be written as a sum of positive squares in 4 ways, for example, as 113358609 + 23435281 = 10647^2 + 4841^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 136793890.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75961 + ... + 77740.

Almost surely, 2^136793890 is an apocalyptic number.

136793890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136793890 is a deficient number, since it is larger than the sum of its proper divisors (112203350).

136793890 is a wasteful number, since it uses less digits than its factorization.

136793890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153797.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 136793890 is about 11695.8920138654. The cubic root of 136793890 is about 515.2550218400.

The spelling of 136793890 in words is "one hundred thirty-six million, seven hundred ninety-three thousand, eight hundred ninety".