2298890640 has 40 divisors (see below), whose sum is σ = 7126561728. Its totient is φ = 613037440.

The previous prime is 2298890621. The next prime is 2298890651. The reversal of 2298890640 is 460988922.

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 (48) 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 (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2298890640.

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, 4789116 + ... + 4789595.

Almost surely, 2^2298890640 is an apocalyptic number.

2298890640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2298890640 is an abundant number, since it is smaller than the sum of its proper divisors (4827671088).

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

2298890640 is a wasteful number, since it uses less digits than its factorization.

2298890640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9578727 (or 9578721 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 2298890640 is about 47946.7479606282. The cubic root of 2298890640 is about 1319.7938612901.

The spelling of 2298890640 in words is "two billion, two hundred ninety-eight million, eight hundred ninety thousand, six hundred forty".