21434013024 has 48 divisors (see below), whose sum is σ = 56447633088. Its totient is φ = 7121388672.

The previous prime is 21434013019. The next prime is 21434013037. The reversal of 21434013024 is 42031043412.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a junction number, because it is equal to n+sod(n) for n = 21434012985 and 21434013003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334162 + ... + 393105.

It is an arithmetic number, because the mean of its divisors is an integer number (1175992356).

Almost surely, 2^21434013024 is an apocalyptic number.

21434013024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21434013024 is an abundant number, since it is smaller than the sum of its proper divisors (35013620064).

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

21434013024 is a wasteful number, since it uses less digits than its factorization.

21434013024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727587 (or 727579 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21434013024 its reverse (42031043412), we get a palindrome (63465056436).

The spelling of 21434013024 in words is "twenty-one billion, four hundred thirty-four million, thirteen thousand, twenty-four".