20935388 has 6 divisors (see below), whose sum is σ = 36636936. Its totient is φ = 10467692.

The previous prime is 20935373. The next prime is 20935399. The reversal of 20935388 is 88353902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2616920 + ... + 2616927.

It is an arithmetic number, because the mean of its divisors is an integer number (6106156).

Almost surely, 2^20935388 is an apocalyptic number.

It is an amenable number.

20935388 is a deficient number, since it is larger than the sum of its proper divisors (15701548).

20935388 is a wasteful number, since it uses less digits than its factorization.

20935388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233851 (or 5233849 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 20935388 is about 4575.5205168374. The cubic root of 20935388 is about 275.6091751892.

The spelling of 20935388 in words is "twenty million, nine hundred thirty-five thousand, three hundred eighty-eight".