20266424 has 8 divisors (see below), whose sum is σ = 37999560. Its totient is φ = 10133208.

The previous prime is 20266409. The next prime is 20266429. The reversal of 20266424 is 42466202.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20266393 and 20266402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20266429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1266644 + ... + 1266659.

It is an arithmetic number, because the mean of its divisors is an integer number (4749945).

Almost surely, 2^20266424 is an apocalyptic number.

It is an amenable number.

20266424 is a deficient number, since it is larger than the sum of its proper divisors (17733136).

20266424 is a wasteful number, since it uses less digits than its factorization.

20266424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533309 (or 2533305 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 20266424 is about 4501.8245190145. The cubic root of 20266424 is about 272.6417588599.

It can be divided in two parts, 20 and 266424, that multiplied together give a triangular number (5328480 = T₃₂₆₄).

The spelling of 20266424 in words is "twenty million, two hundred sixty-six thousand, four hundred twenty-four".