34420428 has 72 divisors (see below), whose sum is σ = 100263072. Its totient is φ = 9752832.

The previous prime is 34420417. The next prime is 34420439. The reversal of 34420428 is 82402443.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (34420417) and next prime (34420439).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34026 + ... + 35022.

Almost surely, 2^34420428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34420428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50131536).

34420428 is an abundant number, since it is smaller than the sum of its proper divisors (65842644).

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

34420428 is a wasteful number, since it uses less digits than its factorization.

34420428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 34420428 is about 5866.8925335308. The cubic root of 34420428 is about 325.2910308288.

The spelling of 34420428 in words is "thirty-four million, four hundred twenty thousand, four hundred twenty-eight".