2508697890 has 48 divisors (see below), whose sum is σ = 6527861496. Its totient is φ = 668448000.

The previous prime is 2508697861. The next prime is 2508697901. The reversal of 2508697890 is 987968052.

It is a happy number.

2508697890 is a `hidden beast` number, since 2 + 508 + 69 + 78 + 9 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2212479369 + 296218521 = 47037^2 + 17211^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108340 + ... + 129440.

Almost surely, 2^2508697890 is an apocalyptic number.

2508697890 is an abundant number, since it is smaller than the sum of its proper divisors (4019163606).

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

2508697890 is a wasteful number, since it uses less digits than its factorization.

2508697890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22435 (or 22432 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 2508697890 is about 50086.9033780289. The cubic root of 2508697890 is about 1358.7809668326.

The spelling of 2508697890 in words is "two billion, five hundred eight million, six hundred ninety-seven thousand, eight hundred ninety".