34687428 has 12 divisors (see below), whose sum is σ = 80937360. Its totient is φ = 11562472.

The previous prime is 34687417. The next prime is 34687439. The reversal of 34687428 is 82478643.

It is an interprime number because it is at equal distance from previous prime (34687417) and next prime (34687439).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×34687428² = 2406435322510368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 34687428.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445298 + ... + 1445321.

It is an arithmetic number, because the mean of its divisors is an integer number (6744780).

Almost surely, 2^34687428 is an apocalyptic number.

It is an amenable number.

34687428 is an abundant number, since it is smaller than the sum of its proper divisors (46249932).

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

34687428 is a wasteful number, since it uses less digits than its factorization.

34687428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890626 (or 2890624 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 34687428 is about 5889.6033822321. The cubic root of 34687428 is about 326.1299618581.

The spelling of 34687428 in words is "thirty-four million, six hundred eighty-seven thousand, four hundred twenty-eight".