135880812 has 72 divisors (see below), whose sum is σ = 356603520. Its totient is φ = 43580160.

The previous prime is 135880763. The next prime is 135880841. The reversal of 135880812 is 218088531.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 349114 + ... + 349502.

Almost surely, 2^135880812 is an apocalyptic number.

135880812 is a gapful number since it is divisible by the number (12) 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 135880812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178301760).

135880812 is an abundant number, since it is smaller than the sum of its proper divisors (220722708).

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

135880812 is a wasteful number, since it uses less digits than its factorization.

135880812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 135880812 is about 11656.7925262484. The cubic root of 135880812 is about 514.1060458371.

The spelling of 135880812 in words is "one hundred thirty-five million, eight hundred eighty thousand, eight hundred twelve".