21464726 has 16 divisors (see below), whose sum is σ = 32660496. Its totient is φ = 10579296.

The previous prime is 21464719. The next prime is 21464777. The reversal of 21464726 is 62746412.

It is a junction number, because it is equal to n+sod(n) for n = 21464692 and 21464701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61685 + ... + 62031.

It is an arithmetic number, because the mean of its divisors is an integer number (2041281).

Almost surely, 2^21464726 is an apocalyptic number.

21464726 is a deficient number, since it is larger than the sum of its proper divisors (11195770).

21464726 is a wasteful number, since it uses less digits than its factorization.

With its successor (21464727) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (703).

21464726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its digits is 16128, while the sum is 32.

The square root of 21464726 is about 4633.0039930913. The cubic root of 21464726 is about 277.9127359252.

The spelling of 21464726 in words is "twenty-one million, four hundred sixty-four thousand, seven hundred twenty-six".