136972026 has 64 divisors (see below), whose sum is σ = 339292800. Its totient is φ = 40704768.

The previous prime is 136972019. The next prime is 136972037. The reversal of 136972026 is 620279631.

It is a super-2 number, since 2×136972026² = 37522671813089352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13516 + ... + 21368.

It is an arithmetic number, because the mean of its divisors is an integer number (5301450).

Almost surely, 2^136972026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136972026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169646400).

136972026 is an abundant number, since it is smaller than the sum of its proper divisors (202320774).

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

136972026 is a wasteful number, since it uses less digits than its factorization.

136972026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900 (or 7894 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 136972026 is about 11703.5048596564. The cubic root of 136972026 is about 515.4785836178.

The spelling of 136972026 in words is "one hundred thirty-six million, nine hundred seventy-two thousand, twenty-six".