34387816 has 8 divisors (see below), whose sum is σ = 64477170. Its totient is φ = 17193904.

The previous prime is 34387811. The next prime is 34387819. The reversal of 34387816 is 61878343.

It can be written as a sum of positive squares in only one way, i.e., 28579716 + 5808100 = 5346^2 + 2410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (34387811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2149231 + ... + 2149246.

Almost surely, 2^34387816 is an apocalyptic number.

34387816 is the 3135-th centered heptagonal number.

It is an amenable number.

34387816 is a deficient number, since it is larger than the sum of its proper divisors (30089354).

34387816 is a wasteful number, since it uses less digits than its factorization.

34387816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298483 (or 4298479 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 34387816 is about 5864.1125500795. The cubic root of 34387816 is about 325.1882648860.

The spelling of 34387816 in words is "thirty-four million, three hundred eighty-seven thousand, eight hundred sixteen".