20465236 has 12 divisors (see below), whose sum is σ = 39070080. Its totient is φ = 9302360.

The previous prime is 20465233. The next prime is 20465243. The reversal of 20465236 is 63256402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20465233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232516 + ... + 232603.

It is an arithmetic number, because the mean of its divisors is an integer number (3255840).

Almost surely, 2^20465236 is an apocalyptic number.

It is an amenable number.

20465236 is a deficient number, since it is larger than the sum of its proper divisors (18604844).

20465236 is a wasteful number, since it uses less digits than its factorization.

20465236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465134 (or 465132 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 20465236 is about 4523.8518985484. The cubic root of 20465236 is about 273.5303906507.

The spelling of 20465236 in words is "twenty million, four hundred sixty-five thousand, two hundred thirty-six".