34776021 has 16 divisors (see below), whose sum is σ = 53107328. Its totient is φ = 19828800.

The previous prime is 34776019. The next prime is 34776031. The reversal of 34776021 is 12067743.

It is not a de Polignac number, because 34776021 - 2¹ = 34776019 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34776021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34776011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9831 + ... + 12891.

It is an arithmetic number, because the mean of its divisors is an integer number (3319208).

Almost surely, 2^34776021 is an apocalyptic number.

It is an amenable number.

34776021 is a deficient number, since it is larger than the sum of its proper divisors (18331307).

34776021 is a wasteful number, since it uses less digits than its factorization.

34776021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 34776021 is about 5897.1197206772. The cubic root of 34776021 is about 326.4073752268.

The spelling of 34776021 in words is "thirty-four million, seven hundred seventy-six thousand, twenty-one".