20436364 has 12 divisors (see below), whose sum is σ = 38514784. Its totient is φ = 9432144.

The previous prime is 20436359. The next prime is 20436371. The reversal of 20436364 is 46363402.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196452 + ... + 196555.

Almost surely, 2^20436364 is an apocalyptic number.

It is an amenable number.

20436364 is a deficient number, since it is larger than the sum of its proper divisors (18078420).

20436364 is a wasteful number, since it uses less digits than its factorization.

20436364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393024 (or 393022 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 20436364 is about 4520.6596863732. The cubic root of 20436364 is about 273.4016994697.

Adding to 20436364 its reverse (46363402), we get a palindrome (66799766).

The spelling of 20436364 in words is "twenty million, four hundred thirty-six thousand, three hundred sixty-four".