19240855 has 16 divisors (see below), whose sum is σ = 24914304. Its totient is φ = 14210560.

The previous prime is 19240853. The next prime is 19240919. The reversal of 19240855 is 55804291.

It is not a de Polignac number, because 19240855 - 2¹ = 19240853 is a prime.

It is a super-2 number, since 2×19240855² = 740421002262050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19240855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19240853) 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, 2370 + ... + 6640.

It is an arithmetic number, because the mean of its divisors is an integer number (1557144).

Almost surely, 2^19240855 is an apocalyptic number.

19240855 is a deficient number, since it is larger than the sum of its proper divisors (5673449).

19240855 is a wasteful number, since it uses less digits than its factorization.

19240855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4346.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 19240855 is about 4386.4399004204. The cubic root of 19240855 is about 267.9629738333.

The spelling of 19240855 in words is "nineteen million, two hundred forty thousand, eight hundred fifty-five".