342946440 has 128 divisors (see below), whose sum is σ = 1210464000. Its totient is φ = 86068224.

The previous prime is 342946393. The next prime is 342946469. The reversal of 342946440 is 44649243.

342946440 is a `hidden beast` number, since 3 + 4 + 2 + 9 + 4 + 644 + 0 = 666.

It is a super-2 number, since 2×342946440² = 235224521417347200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 342946395 and 342946404.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9021 + ... + 27699.

It is an arithmetic number, because the mean of its divisors is an integer number (9456750).

Almost surely, 2^342946440 is an apocalyptic number.

342946440 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 342946440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (605232000).

342946440 is an abundant number, since it is smaller than the sum of its proper divisors (867517560).

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

342946440 is a wasteful number, since it uses less digits than its factorization.

342946440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18716 (or 18706 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 342946440 is about 18518.8131369157. The cubic root of 342946440 is about 699.9635627292.

The spelling of 342946440 in words is "three hundred forty-two million, nine hundred forty-six thousand, four hundred forty".