21462632 has 8 divisors (see below), whose sum is σ = 40242450. Its totient is φ = 10731312.

The previous prime is 21462631. The next prime is 21462671. The reversal of 21462632 is 23626412.

It can be written as a sum of positive squares in only one way, i.e., 12013156 + 9449476 = 3466^2 + 3074^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (21462631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1341407 + ... + 1341422.

Almost surely, 2^21462632 is an apocalyptic number.

It is an amenable number.

21462632 is a deficient number, since it is larger than the sum of its proper divisors (18779818).

21462632 is a wasteful number, since it uses less digits than its factorization.

21462632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682835 (or 2682831 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 21462632 is about 4632.7780002931. The cubic root of 21462632 is about 277.9036983350.

The spelling of 21462632 in words is "twenty-one million, four hundred sixty-two thousand, six hundred thirty-two".