34899840 has 192 divisors, whose sum is σ = 123636240. Its totient is φ = 9068544.

The previous prime is 34899797. The next prime is 34899853. The reversal of 34899840 is 4899843.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420439 + ... + 420521.

Almost surely, 2^34899840 is an apocalyptic number.

34899840 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 34899840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61818120).

34899840 is an abundant number, since it is smaller than the sum of its proper divisors (88736400).

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

34899840 is a wasteful number, since it uses less digits than its factorization.

34899840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 34899840 is about 5907.6086532539. The cubic root of 34899840 is about 326.7943043262.

The spelling of 34899840 in words is "thirty-four million, eight hundred ninety-nine thousand, eight hundred forty".