19920275 has 12 divisors (see below), whose sum is σ = 24757344. Its totient is φ = 15900000.

The previous prime is 19920217. The next prime is 19920281. The reversal of 19920275 is 57202991.

It is not a de Polignac number, because 19920275 - 2¹² = 19916179 is a prime.

It is a super-4 number, since 4×19920275⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18245 + ... + 19305.

It is an arithmetic number, because the mean of its divisors is an integer number (2063112).

Almost surely, 2^19920275 is an apocalyptic number.

19920275 is a deficient number, since it is larger than the sum of its proper divisors (4837069).

19920275 is a wasteful number, since it uses less digits than its factorization.

19920275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 19920275 is about 4463.2135283896. The cubic root of 19920275 is about 271.0806031033.

The spelling of 19920275 in words is "nineteen million, nine hundred twenty thousand, two hundred seventy-five".