21629150 has 24 divisors (see below), whose sum is σ = 40638024. Its totient is φ = 8564000.

The previous prime is 21629143. The next prime is 21629161. The reversal of 21629150 is 5192612.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2909 + ... + 7191.

It is an arithmetic number, because the mean of its divisors is an integer number (1693251).

Almost surely, 2^21629150 is an apocalyptic number.

21629150 is a deficient number, since it is larger than the sum of its proper divisors (19008874).

21629150 is a wasteful number, since it uses less digits than its factorization.

21629150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4396 (or 4391 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 21629150 is about 4650.7149987932. The cubic root of 21629150 is about 278.6205536232.

The spelling of 21629150 in words is "twenty-one million, six hundred twenty-nine thousand, one hundred fifty".