136998840 has 64 divisors (see below), whose sum is σ = 448364160. Its totient is φ = 33211520.

The previous prime is 136998839. The next prime is 136998859. The reversal of 136998840 is 48899631.

136998840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×136998840² = 37537364322691200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136998840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50574 + ... + 53213.

It is an arithmetic number, because the mean of its divisors is an integer number (7005690).

Almost surely, 2^136998840 is an apocalyptic number.

136998840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136998840 is an abundant number, since it is smaller than the sum of its proper divisors (311365320).

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

136998840 is a wasteful number, since it uses less digits than its factorization.

136998840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103812 (or 103808 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 136998840 is about 11704.6503578706. The cubic root of 136998840 is about 515.5122185657.

The spelling of 136998840 in words is "one hundred thirty-six million, nine hundred ninety-eight thousand, eight hundred forty".