20502000 has 240 divisors, whose sum is σ = 76950432. Its totient is φ = 5068800.

The previous prime is 20501989. The next prime is 20502019. The reversal of 20502000 is 20502.

20502000 = 91³ + 92³ + ... + 110³.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 305967 + ... + 306033.

Almost surely, 2^20502000 is an apocalyptic number.

20502000 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 20502000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38475216).

20502000 is an abundant number, since it is smaller than the sum of its proper divisors (56448432).

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

20502000 is a wasteful number, since it uses less digits than its factorization.

20502000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 9.

The square root of 20502000 is about 4527.9134267342. The cubic root of 20502000 is about 273.6940837817.

Adding to 20502000 its reverse (20502), we get a palindrome (20522502).

20502000 divided by its reverse (20502) gives a cube (1000 = 10³).

The spelling of 20502000 in words is "twenty million, five hundred two thousand".