34454640 has 160 divisors (see below), whose sum is σ = 120563712. Its totient is φ = 8064000.

The previous prime is 34454627. The next prime is 34454647. The reversal of 34454640 is 4645443.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 34454598 and 34454607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34454647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81630 + ... + 82050.

Almost surely, 2^34454640 is an apocalyptic number.

34454640 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 34454640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60281856).

34454640 is an abundant number, since it is smaller than the sum of its proper divisors (86109072).

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

34454640 is a wasteful number, since it uses less digits than its factorization.

34454640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 34454640 is about 5869.8074925844. The cubic root of 34454640 is about 325.3987689006.

The spelling of 34454640 in words is "thirty-four million, four hundred fifty-four thousand, six hundred forty".