21192495 has 8 divisors (see below), whose sum is σ = 33908016. Its totient is φ = 11302656.

The previous prime is 21192487. The next prime is 21192503. The reversal of 21192495 is 59429112.

It is an interprime number because it is at equal distance from previous prime (21192487) and next prime (21192503).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21192495 - 2³ = 21192487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706402 + ... + 706431.

It is an arithmetic number, because the mean of its divisors is an integer number (4238502).

Almost surely, 2^21192495 is an apocalyptic number.

21192495 is a deficient number, since it is larger than the sum of its proper divisors (12715521).

21192495 is a wasteful number, since it uses less digits than its factorization.

21192495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412841.

The product of its digits is 6480, while the sum is 33.

The square root of 21192495 is about 4603.5307102267. The cubic root of 21192495 is about 276.7328376748.

The spelling of 21192495 in words is "twenty-one million, one hundred ninety-two thousand, four hundred ninety-five".