20426970 has 32 divisors (see below), whose sum is σ = 49190400. Its totient is φ = 5428800.

The previous prime is 20426969. The next prime is 20426971. The reversal of 20426970 is 7962402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20426969) and next prime (20426971).

It is a super-2 number, since 2×20426970² = 834522206761800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (20426971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9495 + ... + 11445.

It is an arithmetic number, because the mean of its divisors is an integer number (1537200).

Almost surely, 2^20426970 is an apocalyptic number.

20426970 is an abundant number, since it is smaller than the sum of its proper divisors (28763430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20426970 is a wasteful number, since it uses less digits than its factorization.

20426970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 20426970 is about 4519.6205592948. The cubic root of 20426970 is about 273.3598014557.

The spelling of 20426970 in words is "twenty million, four hundred twenty-six thousand, nine hundred seventy".