20434652 has 48 divisors (see below), whose sum is σ = 43706880. Its totient is φ = 8164800.

The previous prime is 20434651. The next prime is 20434703. The reversal of 20434652 is 25643402.

It is a super-2 number, since 2×20434652² = 835150004722208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434651) 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, 37502 + ... + 38042.

It is an arithmetic number, because the mean of its divisors is an integer number (910560).

Almost surely, 2^20434652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20434652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21853440).

20434652 is an abundant number, since it is smaller than the sum of its proper divisors (23272228).

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

20434652 is a wasteful number, since it uses less digits than its factorization.

20434652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 20434652 is about 4520.4703295122. The cubic root of 20434652 is about 273.3940647655.

The spelling of 20434652 in words is "twenty million, four hundred thirty-four thousand, six hundred fifty-two".