34642256440 has 128 divisors (see below), whose sum is σ = 87358461120. Its totient is φ = 12358494720.

The previous prime is 34642256431. The next prime is 34642256491. The reversal of 34642256440 is 4465224643.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 34642256393 and 34642256402.

It is a congruent number.

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, 2815582 + ... + 2827858.

Almost surely, 2^34642256440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34642256440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43679230560).

34642256440 is an abundant number, since it is smaller than the sum of its proper divisors (52716204680).

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

34642256440 is a wasteful number, since it uses less digits than its factorization.

34642256440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12374 (or 12348 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 40.

The spelling of 34642256440 in words is "thirty-four billion, six hundred forty-two million, two hundred fifty-six thousand, four hundred forty".