20467842 has 32 divisors (see below), whose sum is σ = 42142464. Its totient is φ = 6624000.

The previous prime is 20467829. The next prime is 20467849. The reversal of 20467842 is 24876402.

It is a super-2 number, since 2×20467842² = 837865112273928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20467849) 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, 50842 + ... + 51242.

It is an arithmetic number, because the mean of its divisors is an integer number (1316952).

Almost surely, 2^20467842 is an apocalyptic number.

20467842 is an abundant number, since it is smaller than the sum of its proper divisors (21674622).

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

20467842 is a wasteful number, since it uses less digits than its factorization.

20467842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 20467842 is about 4524.1399182607. The cubic root of 20467842 is about 273.5420004190.

The spelling of 20467842 in words is "twenty million, four hundred sixty-seven thousand, eight hundred forty-two".