21376334 has 32 divisors (see below), whose sum is σ = 37933056. Its totient is φ = 8844480.

The previous prime is 21376321. The next prime is 21376339. The reversal of 21376334 is 43367312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21376297 and 21376306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21376339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95747 + ... + 95969.

It is an arithmetic number, because the mean of its divisors is an integer number (1185408).

Almost surely, 2^21376334 is an apocalyptic number.

21376334 is a deficient number, since it is larger than the sum of its proper divisors (16556722).

21376334 is a wasteful number, since it uses less digits than its factorization.

21376334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its digits is 9072, while the sum is 29.

The square root of 21376334 is about 4623.4547688931. The cubic root of 21376334 is about 277.5307284101.

It can be divided in two parts, 21376 and 334, that multiplied together give a square (7139584 = 2672²).

The spelling of 21376334 in words is "twenty-one million, three hundred seventy-six thousand, three hundred thirty-four".