21494104 has 16 divisors (see below), whose sum is σ = 41691600. Its totient is φ = 10376352.

The previous prime is 21494101. The next prime is 21494107. The reversal of 21494104 is 40149412.

It is an interprime number because it is at equal distance from previous prime (21494101) and next prime (21494107).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21494101) 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, 46092 + ... + 46555.

It is an arithmetic number, because the mean of its divisors is an integer number (2605725).

Almost surely, 2^21494104 is an apocalyptic number.

It is an amenable number.

21494104 is a deficient number, since it is larger than the sum of its proper divisors (20197496).

21494104 is a wasteful number, since it uses less digits than its factorization.

21494104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92682 (or 92678 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 21494104 is about 4636.1734221230. The cubic root of 21494104 is about 278.0394678537.

The spelling of 21494104 in words is "twenty-one million, four hundred ninety-four thousand, one hundred four".