21264034 has 8 divisors (see below), whose sum is σ = 34795728. Its totient is φ = 9665460.

The previous prime is 21264031. The next prime is 21264037. The reversal of 21264034 is 43046212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21264031) and next prime (21264037).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 966547 = 21264034 / (2 + 1 + 2 + 6 + 4 + 0 + 3 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 21263996 and 21264014.

It is not an unprimeable number, because it can be changed into a prime (21264031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483252 + ... + 483295.

It is an arithmetic number, because the mean of its divisors is an integer number (4349466).

Almost surely, 2^21264034 is an apocalyptic number.

21264034 is a deficient number, since it is larger than the sum of its proper divisors (13531694).

21264034 is a wasteful number, since it uses less digits than its factorization.

21264034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966560.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 21264034 is about 4611.2941784276. The cubic root of 21264034 is about 277.0438747638.

It can be divided in two parts, 212 and 64034, that added together give a palindrome (64246).

The spelling of 21264034 in words is "twenty-one million, two hundred sixty-four thousand, thirty-four".