20246520 has 64 divisors (see below), whose sum is σ = 69419520. Its totient is φ = 4627584.

The previous prime is 20246491. The next prime is 20246539. The reversal of 20246520 is 2564202.

It is a super-2 number, since 2×20246520² = 819843144220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11212 + ... + 12891.

It is an arithmetic number, because the mean of its divisors is an integer number (1084680).

Almost surely, 2^20246520 is an apocalyptic number.

20246520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20246520 is an abundant number, since it is smaller than the sum of its proper divisors (49173000).

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

20246520 is a wasteful number, since it uses less digits than its factorization.

20246520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24124 (or 24120 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20246520 is about 4499.6133167196. The cubic root of 20246520 is about 272.5524742534.

The spelling of 20246520 in words is "twenty million, two hundred forty-six thousand, five hundred twenty".