30708890 has 16 divisors (see below), whose sum is σ = 56770632. Its totient is φ = 11951424.

The previous prime is 30708869. The next prime is 30708901. The reversal of 30708890 is 9880703.

It can be written as a sum of positive squares in 4 ways, for example, as 29953729 + 755161 = 5473^2 + 869^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30708890.

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, 41129 + ... + 41868.

Almost surely, 2^30708890 is an apocalyptic number.

30708890 is a deficient number, since it is larger than the sum of its proper divisors (26061742).

30708890 is a wasteful number, since it uses less digits than its factorization.

30708890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83041.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 30708890 is about 5541.5602496048. The cubic root of 30708890 is about 313.1516513770.

The spelling of 30708890 in words is "thirty million, seven hundred eight thousand, eight hundred ninety".