2633263440 has 40 divisors (see below), whose sum is σ = 8163117408. Its totient is φ = 702203520.

The previous prime is 2633263427. The next prime is 2633263453. The reversal of 2633263440 is 443623362.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2633263427) and next prime (2633263453).

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

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, 5485726 + ... + 5486205.

Almost surely, 2^2633263440 is an apocalyptic number.

2633263440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2633263440 is an abundant number, since it is smaller than the sum of its proper divisors (5529853968).

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

2633263440 is a wasteful number, since it uses less digits than its factorization.

2633263440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10971947 (or 10971941 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 33.

The square root of 2633263440 is about 51315.3333809691. Note that the first 4 decimals coincide. The cubic root of 2633263440 is about 1380.9080769781.

The spelling of 2633263440 in words is "two billion, six hundred thirty-three million, two hundred sixty-three thousand, four hundred forty".