20294890 has 32 divisors (see below), whose sum is σ = 45546624. Its totient is φ = 6325440.

The previous prime is 20294861. The next prime is 20294891. The reversal of 20294890 is 9849202.

It is a super-3 number, since 3×20294890³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20294891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12409 + ... + 13948.

It is an arithmetic number, because the mean of its divisors is an integer number (1423332).

Almost surely, 2^20294890 is an apocalyptic number.

20294890 is an abundant number, since it is smaller than the sum of its proper divisors (25251734).

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

20294890 is a wasteful number, since it uses less digits than its factorization.

20294890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26382.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 20294890 is about 4504.9850166233. The cubic root of 20294890 is about 272.7693490300.

The spelling of 20294890 in words is "twenty million, two hundred ninety-four thousand, eight hundred ninety".