21514752 has 240 divisors, whose sum is σ = 76602240. Its totient is φ = 5677056.

The previous prime is 21514751. The next prime is 21514769. The reversal of 21514752 is 25741512.

It is not an unprimeable number, because it can be changed into a prime (21514751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 741874 + ... + 741902.

It is an arithmetic number, because the mean of its divisors is an integer number (319176).

Almost surely, 2^21514752 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 21514752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38301120).

21514752 is an abundant number, since it is smaller than the sum of its proper divisors (55087488).

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

21514752 is a wasteful number, since it uses less digits than its factorization.

21514752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 64 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 21514752 is about 4638.3997240428. The cubic root of 21514752 is about 278.1284708905.

It can be divided in two parts, 2151 and 4752, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 21514752 in words is "twenty-one million, five hundred fourteen thousand, seven hundred fifty-two".