20434002072 has 64 divisors (see below), whose sum is σ = 55754438400. Its totient is φ = 6189306240.

The previous prime is 20434002041. The next prime is 20434002073. The reversal of 20434002072 is 27020043402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434002073) 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, 605829 + ... + 638667.

It is an arithmetic number, because the mean of its divisors is an integer number (871163100).

Almost surely, 2^20434002072 is an apocalyptic number.

20434002072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20434002072 is an abundant number, since it is smaller than the sum of its proper divisors (35320436328).

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

20434002072 is a wasteful number, since it uses less digits than its factorization.

20434002072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35216 (or 35212 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

Adding to 20434002072 its reverse (27020043402), we get a palindrome (47454045474).

The spelling of 20434002072 in words is "twenty billion, four hundred thirty-four million, two thousand, seventy-two".