22496987 has 4 divisors (see below), whose sum is σ = 23045736. Its totient is φ = 21948240.

The previous prime is 22496959. The next prime is 22496993. The reversal of 22496987 is 78969422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22496987 - 2⁶ = 22496923 is a prime.

It is a super-2 number, since 2×22496987² = 1012228848156338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22496087) 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, 274313 + ... + 274394.

It is an arithmetic number, because the mean of its divisors is an integer number (5761434).

Almost surely, 2^22496987 is an apocalyptic number.

22496987 is a deficient number, since it is larger than the sum of its proper divisors (548749).

22496987 is an equidigital number, since it uses as much as digits as its factorization.

22496987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548748.

The product of its digits is 435456, while the sum is 47.

The square root of 22496987 is about 4743.0988815330. The cubic root of 22496987 is about 282.2982065837.

The spelling of 22496987 in words is "twenty-two million, four hundred ninety-six thousand, nine hundred eighty-seven".