20901434 has 8 divisors (see below), whose sum is σ = 32715360. Its totient is φ = 9996316.

The previous prime is 20901427. The next prime is 20901437. The reversal of 20901434 is 43410902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (20901437) 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, 227144 + ... + 227235.

It is an arithmetic number, because the mean of its divisors is an integer number (4089420).

Almost surely, 2^20901434 is an apocalyptic number.

20901434 is a deficient number, since it is larger than the sum of its proper divisors (11813926).

20901434 is a wasteful number, since it uses less digits than its factorization.

20901434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454404.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20901434 is about 4571.8086136670. The cubic root of 20901434 is about 275.4600959110.

The spelling of 20901434 in words is "twenty million, nine hundred one thousand, four hundred thirty-four".