1802827440 has 60 divisors (see below), whose sum is σ = 6054497904. Its totient is φ = 480753792.

The previous prime is 1802827421. The next prime is 1802827447. The reversal of 1802827440 is 447282081.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1802827395 and 1802827404.

It is not an unprimeable number, because it can be changed into a prime (1802827447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1251244 + ... + 1252683.

Almost surely, 2^1802827440 is an apocalyptic number.

1802827440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1802827440 is an abundant number, since it is smaller than the sum of its proper divisors (4251670464).

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

1802827440 is a wasteful number, since it uses less digits than its factorization.

1802827440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503946 (or 2503937 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 1802827440 is about 42459.7154959851. The cubic root of 1802827440 is about 1217.0769941028.

The spelling of 1802827440 in words is "one billion, eight hundred two million, eight hundred twenty-seven thousand, four hundred forty".