21196734 has 16 divisors (see below), whose sum is σ = 45654672. Its totient is φ = 6522048.

The previous prime is 21196733. The next prime is 21196751. The reversal of 21196734 is 43769112.

It is a junction number, because it is equal to n+sod(n) for n = 21196695 and 21196704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21196733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135799 + ... + 135954.

It is an arithmetic number, because the mean of its divisors is an integer number (2853417).

Almost surely, 2^21196734 is an apocalyptic number.

21196734 is an abundant number, since it is smaller than the sum of its proper divisors (24457938).

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

21196734 is a wasteful number, since it uses less digits than its factorization.

21196734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271771.

The product of its digits is 9072, while the sum is 33.

The square root of 21196734 is about 4603.9910946916. The cubic root of 21196734 is about 276.7512874813.

The spelling of 21196734 in words is "twenty-one million, one hundred ninety-six thousand, seven hundred thirty-four".