34279920 has 120 divisors (see below), whose sum is σ = 117688896. Its totient is φ = 8937984.

The previous prime is 34279919. The next prime is 34279957. The reversal of 34279920 is 2997243.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×34279920² = 2350225830412800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 33334 + ... + 34346.

Almost surely, 2^34279920 is an apocalyptic number.

34279920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34279920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58844448).

34279920 is an abundant number, since it is smaller than the sum of its proper divisors (83408976).

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

34279920 is a wasteful number, since it uses less digits than its factorization.

34279920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 34279920 is about 5854.9056354479. The cubic root of 34279920 is about 324.8478025043.

The spelling of 34279920 in words is "thirty-four million, two hundred seventy-nine thousand, nine hundred twenty".