34402021 has 8 divisors (see below), whose sum is σ = 35730464. Its totient is φ = 33097680.

The previous prime is 34402013. The next prime is 34402037. The reversal of 34402021 is 12020443.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34402021 - 2³ = 34402013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34401986 and 34402004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34402001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3090 + ... + 8851.

It is an arithmetic number, because the mean of its divisors is an integer number (4466308).

Almost surely, 2^34402021 is an apocalyptic number.

It is an amenable number.

34402021 is a deficient number, since it is larger than the sum of its proper divisors (1328443).

34402021 is a wasteful number, since it uses less digits than its factorization.

34402021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12051.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 34402021 is about 5865.3236057357. The cubic root of 34402021 is about 325.2330352333.

Adding to 34402021 its reverse (12020443), we get a palindrome (46422464).

The spelling of 34402021 in words is "thirty-four million, four hundred two thousand, twenty-one".