21734352 has 40 divisors (see below), whose sum is σ = 62386880. Its totient is φ = 7244640.

The previous prime is 21734329. The next prime is 21734357. The reversal of 21734352 is 25343712.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21734357) 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, 24724 + ... + 25587.

It is an arithmetic number, because the mean of its divisors is an integer number (1559672).

Almost surely, 2^21734352 is an apocalyptic number.

It is an amenable number.

21734352 is an abundant number, since it is smaller than the sum of its proper divisors (40652528).

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

21734352 is a wasteful number, since it uses less digits than its factorization.

21734352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50328 (or 50316 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 21734352 is about 4662.0115829972. The cubic root of 21734352 is about 279.0715506165.

The spelling of 21734352 in words is "twenty-one million, seven hundred thirty-four thousand, three hundred fifty-two".