21470954 has 8 divisors (see below), whose sum is σ = 32687328. Its totient is φ = 10575180.

The previous prime is 21470947. The next prime is 21470957. The reversal of 21470954 is 45907412.

It is a happy number.

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

It is a super-2 number, since 2×21470954² = 922003731340232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21470954.

It is not an unprimeable number, because it can be changed into a prime (21470957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79982 + ... + 80249.

It is an arithmetic number, because the mean of its divisors is an integer number (4085916).

Almost surely, 2^21470954 is an apocalyptic number.

21470954 is a deficient number, since it is larger than the sum of its proper divisors (11216374).

21470954 is a wasteful number, since it uses less digits than its factorization.

21470954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160300.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 21470954 is about 4633.6760784500. The cubic root of 21470954 is about 277.9396121616.

The spelling of 21470954 in words is "twenty-one million, four hundred seventy thousand, nine hundred fifty-four".