340172672 has 128 divisors (see below), whose sum is σ = 823572480. Its totient is φ = 136857600.

The previous prime is 340172663. The next prime is 340172683. The reversal of 340172672 is 276271043.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1027547 + ... + 1027877.

It is an arithmetic number, because the mean of its divisors is an integer number (6434160).

Almost surely, 2^340172672 is an apocalyptic number.

340172672 is a gapful number since it is divisible by the number (32) 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 340172672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411786240).

340172672 is an abundant number, since it is smaller than the sum of its proper divisors (483399808).

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

340172672 is a wasteful number, since it uses less digits than its factorization.

340172672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 340172672 is about 18443.7705472607. The cubic root of 340172672 is about 698.0713385925.

The spelling of 340172672 in words is "three hundred forty million, one hundred seventy-two thousand, six hundred seventy-two".