20514620 has 72 divisors (see below), whose sum is σ = 51654624. Its totient is φ = 6703488.

The previous prime is 20514619. The next prime is 20514677. The reversal of 20514620 is 2641502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20514592 and 20514601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73922 + ... + 74198.

Almost surely, 2^20514620 is an apocalyptic number.

20514620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20514620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25827312).

20514620 is an abundant number, since it is smaller than the sum of its proper divisors (31140004).

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

20514620 is a wasteful number, since it uses less digits than its factorization.

20514620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20514620 is about 4529.3067902274. The cubic root of 20514620 is about 273.7502297003.

The spelling of 20514620 in words is "twenty million, five hundred fourteen thousand, six hundred twenty".