2215400990 has 32 divisors (see below), whose sum is σ = 4356966240. Its totient is φ = 804355200.

The previous prime is 2215400983. The next prime is 2215401017. The reversal of 2215400990 is 990045122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57476 + ... + 87944.

It is an arithmetic number, because the mean of its divisors is an integer number (136155195).

Almost surely, 2^2215400990 is an apocalyptic number.

2215400990 is a deficient number, since it is larger than the sum of its proper divisors (2141565250).

2215400990 is a wasteful number, since it uses less digits than its factorization.

2215400990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31148.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 2215400990 is about 47068.0463796831. The cubic root of 2215400990 is about 1303.6193008224.

The spelling of 2215400990 in words is "two billion, two hundred fifteen million, four hundred thousand, nine hundred ninety".