2497990040 has 192 divisors, whose sum is σ = 7304592960. Its totient is φ = 748569600.

The previous prime is 2497990009. The next prime is 2497990063. The reversal of 2497990040 is 400997942.

It is a junction number, because it is equal to n+sod(n) for n = 2497989973 and 2497990000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1313090 + ... + 1314990.

It is an arithmetic number, because the mean of its divisors is an integer number (38044755).

Almost surely, 2^2497990040 is an apocalyptic number.

2497990040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2497990040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3652296480).

2497990040 is an abundant number, since it is smaller than the sum of its proper divisors (4806602920).

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

2497990040 is a wasteful number, since it uses less digits than its factorization.

2497990040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 2497990040 is about 49979.8963584360. The cubic root of 2497990040 is about 1356.8449860554.

The spelling of 2497990040 in words is "two billion, four hundred ninety-seven million, nine hundred ninety thousand, forty".