22457007 has 10 divisors (see below), whose sum is σ = 33547008. Its totient is φ = 14971284.

The previous prime is 22457003. The next prime is 22457009. The reversal of 22457007 is 70075422.

It is not a de Polignac number, because 22457007 - 2² = 22457003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 4 and base 16.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22457003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 138543 + ... + 138704.

Almost surely, 2^22457007 is an apocalyptic number.

22457007 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22457007 is a deficient number, since it is larger than the sum of its proper divisors (11090001).

22457007 is an equidigital number, since it uses as much as digits as its factorization.

22457007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277259 (or 277250 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 22457007 is about 4738.8824631974. The cubic root of 22457007 is about 282.1308808492.

The spelling of 22457007 in words is "twenty-two million, four hundred fifty-seven thousand, seven".