21354034 has 32 divisors (see below), whose sum is σ = 36126720. Its totient is φ = 9398592.

The previous prime is 21354019. The next prime is 21354049. The reversal of 21354034 is 43045312.

It is an interprime number because it is at equal distance from previous prime (21354019) and next prime (21354049).

It is a junction number, because it is equal to n+sod(n) for n = 21353996 and 21354014.

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, 95647 + ... + 95869.

It is an arithmetic number, because the mean of its divisors is an integer number (1128960).

Almost surely, 2^21354034 is an apocalyptic number.

21354034 is a deficient number, since it is larger than the sum of its proper divisors (14772686).

21354034 is a wasteful number, since it uses less digits than its factorization.

21354034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 21354034 is about 4621.0425230677. The cubic root of 21354034 is about 277.4341872444.

Adding to 21354034 its reverse (43045312), we get a palindrome (64399346).

The spelling of 21354034 in words is "twenty-one million, three hundred fifty-four thousand, thirty-four".