20401794 has 56 divisors (see below), whose sum is σ = 52464000. Its totient is φ = 5826168.

The previous prime is 20401793. The next prime is 20401831. The reversal of 20401794 is 49710402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20401793) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 9207 + ... + 11205.

Almost surely, 2^20401794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20401794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26232000).

20401794 is an abundant number, since it is smaller than the sum of its proper divisors (32062206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20401794 is an equidigital number, since it uses as much as digits as its factorization.

20401794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026 (or 2011 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 20401794 is about 4516.8345110265. The cubic root of 20401794 is about 273.2474510406.

The spelling of 20401794 in words is "twenty million, four hundred one thousand, seven hundred ninety-four".