10197840 has 40 divisors (see below), whose sum is σ = 31614048. Its totient is φ = 2719360.

The previous prime is 10197833. The next prime is 10197857. The reversal of 10197840 is 4879101.

10197840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 10197798 and 10197807.

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, 21006 + ... + 21485.

Almost surely, 2^10197840 is an apocalyptic number.

10197840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10197840 is an abundant number, since it is smaller than the sum of its proper divisors (21416208).

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

10197840 is a wasteful number, since it uses less digits than its factorization.

10197840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42507 (or 42501 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 10197840 is about 3193.4057055125. The cubic root of 10197840 is about 216.8549789533.

The spelling of 10197840 in words is "ten million, one hundred ninety-seven thousand, eight hundred forty".