21795354 has 48 divisors (see below), whose sum is σ = 55298880. Its totient is φ = 6073920.

The previous prime is 21795353. The next prime is 21795373. The reversal of 21795354 is 45359712.

21795354 is a `hidden beast` number, since 217 + 95 + 354 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (21795353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3057 + ... + 7275.

It is an arithmetic number, because the mean of its divisors is an integer number (1152060).

Almost surely, 2^21795354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21795354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27649440).

21795354 is an abundant number, since it is smaller than the sum of its proper divisors (33503526).

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

21795354 is a wasteful number, since it uses less digits than its factorization.

21795354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275 (or 4272 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 21795354 is about 4668.5494535241. The cubic root of 21795354 is about 279.3323975997.

The spelling of 21795354 in words is "twenty-one million, seven hundred ninety-five thousand, three hundred fifty-four".