2136540 has 48 divisors (see below), whose sum is σ = 6838272. Its totient is φ = 488256.

The previous prime is 2136527. The next prime is 2136553. The reversal of 2136540 is 456312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2136527) and next prime (2136553).

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 2124 + ... + 2963.

It is an arithmetic number, because the mean of its divisors is an integer number (142464).

2^2136540 is an apocalyptic number.

2136540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2136540 is an abundant number, since it is smaller than the sum of its proper divisors (4701732).

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

2136540 is a wasteful number, since it uses less digits than its factorization.

2136540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106 (or 5104 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2136540 is about 1461.6908017772. The cubic root of 2136540 is about 128.7963857119.

The spelling of 2136540 in words is "two million, one hundred thirty-six thousand, five hundred forty".