2987561436 has 24 divisors (see below), whose sum is σ = 7381034640. Its totient is φ = 937274112.

The previous prime is 2987561431. The next prime is 2987561459. The reversal of 2987561436 is 6341657892.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2987561431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7322251 + ... + 7322658.

It is an arithmetic number, because the mean of its divisors is an integer number (307543110).

Almost surely, 2^2987561436 is an apocalyptic number.

It is an amenable number.

2987561436 is an abundant number, since it is smaller than the sum of its proper divisors (4393473204).

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

2987561436 is a wasteful number, since it uses less digits than its factorization.

2987561436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14644933 (or 14644931 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The square root of 2987561436 is about 54658.5897732461. The cubic root of 2987561436 is about 1440.2535298202.

The spelling of 2987561436 in words is "two billion, nine hundred eighty-seven million, five hundred sixty-one thousand, four hundred thirty-six".