340857720 has 480 divisors, whose sum is σ = 1415264400. Its totient is φ = 73156608.

The previous prime is 340857719. The next prime is 340857761. The reversal of 340857720 is 27758043.

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 119 ways as a sum of consecutive naturals, for example, 3016384 + ... + 3016496.

Almost surely, 2^340857720 is an apocalyptic number.

340857720 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 340857720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (707632200).

340857720 is an abundant number, since it is smaller than the sum of its proper divisors (1074406680).

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

340857720 is a wasteful number, since it uses less digits than its factorization.

340857720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 340857720 is about 18462.3324636948. The cubic root of 340857720 is about 698.5396220658.

The spelling of 340857720 in words is "three hundred forty million, eight hundred fifty-seven thousand, seven hundred twenty".