20228494 has 16 divisors (see below), whose sum is σ = 35647920. Its totient is φ = 8487360.

The previous prime is 20228489. The next prime is 20228501. The reversal of 20228494 is 49482202.

It is a super-3 number, since 3×20228494³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35079 + ... + 35650.

It is an arithmetic number, because the mean of its divisors is an integer number (2227995).

Almost surely, 2^20228494 is an apocalyptic number.

20228494 is a deficient number, since it is larger than the sum of its proper divisors (15419426).

20228494 is a wasteful number, since it uses less digits than its factorization.

20228494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70755.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 20228494 is about 4497.6098096656. The cubic root of 20228494 is about 272.4715633991.

The spelling of 20228494 in words is "twenty million, two hundred twenty-eight thousand, four hundred ninety-four".