2902766640 has 80 divisors (see below), whose sum is σ = 9003757056. Its totient is φ = 773625600.

The previous prime is 2902766639. The next prime is 2902766641. The reversal of 2902766640 is 466672092.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2902766639) and next prime (2902766641).

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 2902766592 and 2902766601.

It is not an unprimeable number, because it can be changed into a prime (2902766641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797625 + ... + 801255.

Almost surely, 2^2902766640 is an apocalyptic number.

2902766640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2902766640 is an abundant number, since it is smaller than the sum of its proper divisors (6100990416).

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

2902766640 is a wasteful number, since it uses less digits than its factorization.

2902766640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6978 (or 6972 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 2902766640 is about 53877.3295552035. The cubic root of 2902766640 is about 1426.4964912847.

The spelling of 2902766640 in words is "two billion, nine hundred two million, seven hundred sixty-six thousand, six hundred forty".