20426607 has 8 divisors (see below), whose sum is σ = 30261680. Its totient is φ = 13617720.

The previous prime is 20426603. The next prime is 20426611. The reversal of 20426607 is 70662402.

It is an interprime number because it is at equal distance from previous prime (20426603) and next prime (20426611).

It is not a de Polignac number, because 20426607 - 2² = 20426603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 756541 = 20426607 / (2 + 0 + 4 + 2 + 6 + 6 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20426603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378244 + ... + 378297.

It is an arithmetic number, because the mean of its divisors is an integer number (3782710).

Almost surely, 2^20426607 is an apocalyptic number.

20426607 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20426607 is a deficient number, since it is larger than the sum of its proper divisors (9835073).

20426607 is an equidigital number, since it uses as much as digits as its factorization.

20426607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756550 (or 756544 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20426607 is about 4519.5804008779. The cubic root of 20426607 is about 273.3581821880.

It can be divided in two parts, 2042 and 6607, that added together give a square (8649 = 93²).

The spelling of 20426607 in words is "twenty million, four hundred twenty-six thousand, six hundred seven".