212791490 has 16 divisors (see below), whose sum is σ = 383193720. Its totient is φ = 85079040.

The previous prime is 212791489. The next prime is 212791541. The reversal of 212791490 is 94197212.

212791490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 179533201 + 33258289 = 13399^2 + 5767^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212791490.

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, 35426 + ... + 40994.

Almost surely, 2^212791490 is an apocalyptic number.

212791490 is a deficient number, since it is larger than the sum of its proper divisors (170402230).

212791490 is a wasteful number, since it uses less digits than its factorization.

212791490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9397.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 212791490 is about 14587.3743353628. The cubic root of 212791490 is about 597.0143249586.

The spelling of 212791490 in words is "two hundred twelve million, seven hundred ninety-one thousand, four hundred ninety".