21477034 has 8 divisors (see below), whose sum is σ = 32262048. Its totient is φ = 10723020.

The previous prime is 21477007. The next prime is 21477037. The reversal of 21477034 is 43077412.

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

It is a super-2 number, since 2×21477034² = 922525978874312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21476993 and 21477011.

It is not an unprimeable number, because it can be changed into a prime (21477037) 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, 5932 + ... + 8839.

It is an arithmetic number, because the mean of its divisors is an integer number (4032756).

Almost surely, 2^21477034 is an apocalyptic number.

21477034 is a deficient number, since it is larger than the sum of its proper divisors (10785014).

21477034 is a wasteful number, since it uses less digits than its factorization.

21477034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15500.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 21477034 is about 4634.3320985877. The cubic root of 21477034 is about 277.9658447074.

The spelling of 21477034 in words is "twenty-one million, four hundred seventy-seven thousand, thirty-four".