20352915 has 24 divisors (see below), whose sum is σ = 38486448. Its totient is φ = 9867840.

The previous prime is 20352887. The next prime is 20352919. The reversal of 20352915 is 51925302.

It is not a de Polignac number, because 20352915 - 2⁵ = 20352883 is a prime.

It is a super-2 number, since 2×20352915² = 828482297994450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20352919) 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, 20064 + ... + 21053.

It is an arithmetic number, because the mean of its divisors is an integer number (1603602).

Almost surely, 2^20352915 is an apocalyptic number.

20352915 is a deficient number, since it is larger than the sum of its proper divisors (18133533).

20352915 is a wasteful number, since it uses less digits than its factorization.

20352915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41139 (or 41136 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 20352915 is about 4511.4205079997. The cubic root of 20352915 is about 273.0290594192.

It can be divided in two parts, 2035 and 2915, that added together give a triangular number (4950 = T₉₉).

The spelling of 20352915 in words is "twenty million, three hundred fifty-two thousand, nine hundred fifteen".