20246915 has 32 divisors (see below), whose sum is σ = 28195776. Its totient is φ = 13824000.

The previous prime is 20246911. The next prime is 20246917. The reversal of 20246915 is 51964202.

It is a happy number.

It is not a de Polignac number, because 20246915 - 2² = 20246911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20246911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80540 + ... + 80790.

It is an arithmetic number, because the mean of its divisors is an integer number (881118).

Almost surely, 2^20246915 is an apocalyptic number.

20246915 is a deficient number, since it is larger than the sum of its proper divisors (7948861).

20246915 is a wasteful number, since it uses less digits than its factorization.

20246915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 20246915 is about 4499.6572091660. The cubic root of 20246915 is about 272.5542466983.

The spelling of 20246915 in words is "twenty million, two hundred forty-six thousand, nine hundred fifteen".