2215850640 has 40 divisors (see below), whose sum is σ = 6869137728. Its totient is φ = 590893440.

The previous prime is 2215850629. The next prime is 2215850653. The reversal of 2215850640 is 460585122.

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

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, 4616116 + ... + 4616595.

Almost surely, 2^2215850640 is an apocalyptic number.

2215850640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215850640 is an abundant number, since it is smaller than the sum of its proper divisors (4653287088).

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

2215850640 is a wasteful number, since it uses less digits than its factorization.

2215850640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9232727 (or 9232721 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 2215850640 is about 47072.8227324430. The cubic root of 2215850640 is about 1303.7074914432.

The spelling of 2215850640 in words is "two billion, two hundred fifteen million, eight hundred fifty thousand, six hundred forty".