2028400884 has 36 divisors (see below), whose sum is σ = 5214256320. Its totient is φ = 664673040.

The previous prime is 2028400867. The next prime is 2028400903. The reversal of 2028400884 is 4880048202.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2028400884² = 8228820292423962912, which contains 22 as substring.

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

It is a congruent 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, 475372 + ... + 479619.

Almost surely, 2^2028400884 is an apocalyptic number.

It is an amenable number.

2028400884 is an abundant number, since it is smaller than the sum of its proper divisors (3185855436).

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

2028400884 is a wasteful number, since it uses less digits than its factorization.

2028400884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955060 (or 955055 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The square root of 2028400884 is about 45037.7717477230. The cubic root of 2028400884 is about 1265.8568528580.

The spelling of 2028400884 in words is "two billion, twenty-eight million, four hundred thousand, eight hundred eighty-four".