34420140 has 60 divisors (see below), whose sum is σ = 107982336. Its totient is φ = 9178272.

The previous prime is 34420109. The next prime is 34420151. The reversal of 34420140 is 4102443.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9004 + ... + 12243.

Almost surely, 2^34420140 is an apocalyptic number.

34420140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

34420140 is an abundant number, since it is smaller than the sum of its proper divisors (73562196).

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

34420140 is a wasteful number, since it uses less digits than its factorization.

34420140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21268 (or 21257 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 34420140 is about 5866.8679889699. The cubic root of 34420140 is about 325.2901235761.

Adding to 34420140 its reverse (4102443), we get a palindrome (38522583).

The spelling of 34420140 in words is "thirty-four million, four hundred twenty thousand, one hundred forty".