3534240 has 96 divisors (see below), whose sum is σ = 11491200. Its totient is φ = 912384.

The previous prime is 3534211. The next prime is 3534257. The reversal of 3534240 is 424353.

3534240 = T₈₀ + T₈₁ + ... + T₂₇₈.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17661 + ... + 17859.

It is an arithmetic number, because the mean of its divisors is an integer number (119700).

Almost surely, 2^3534240 is an apocalyptic number.

3534240 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 3534240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5745600).

3534240 is an abundant number, since it is smaller than the sum of its proper divisors (7956960).

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

3534240 is a wasteful number, since it uses less digits than its factorization.

3534240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 3534240 is about 1879.9574463269. The cubic root of 3534240 is about 152.3229513881.

Adding to 3534240 its reverse (424353), we get a palindrome (3958593).

The spelling of 3534240 in words is "three million, five hundred thirty-four thousand, two hundred forty".