21470010 has 32 divisors (see below), whose sum is σ = 51649920. Its totient is φ = 5711808.

The previous prime is 21469999. The next prime is 21470047. The reversal of 21470010 is 1007412.

It is a super-2 number, since 2×21470010² = 921922658800200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24744 + ... + 25596.

It is an arithmetic number, because the mean of its divisors is an integer number (1614060).

Almost surely, 2^21470010 is an apocalyptic number.

21470010 is an abundant number, since it is smaller than the sum of its proper divisors (30179910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21470010 is a wasteful number, since it uses less digits than its factorization.

21470010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 21470010 is about 4633.5742143620. The cubic root of 21470010 is about 277.9355387695.

Adding to 21470010 its reverse (1007412), we get a palindrome (22477422).

The spelling of 21470010 in words is "twenty-one million, four hundred seventy thousand, ten".