198649056 has 24 divisors (see below), whose sum is σ = 521454024. Its totient is φ = 66216320.

The previous prime is 198649051. The next prime is 198649093. The reversal of 198649056 is 650946891.

198649056 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 (24).

It is a super-2 number, since 2×198649056² = 78922894899382272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 198648996 and 198649014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198649051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1034535 + ... + 1034726.

It is an arithmetic number, because the mean of its divisors is an integer number (21727251).

Almost surely, 2^198649056 is an apocalyptic number.

198649056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

198649056 is an abundant number, since it is smaller than the sum of its proper divisors (322804968).

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

198649056 is a wasteful number, since it uses less digits than its factorization.

198649056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069274 (or 2069266 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 198649056 is about 14094.2916104358. The cubic root of 198649056 is about 583.4838436839.

It can be divided in two parts, 19864 and 9056, that added together give a triangular number (28920 = T₂₄₀).

The spelling of 198649056 in words is "one hundred ninety-eight million, six hundred forty-nine thousand, fifty-six".