3542640 has 80 divisors (see below), whose sum is σ = 11383200. Its totient is φ = 910336.

The previous prime is 3542603. The next prime is 3542653. The reversal of 3542640 is 462453.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×3542640³ (a number of 21 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3542640.

It is a congruent number.

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, 6706 + ... + 7214.

It is an arithmetic number, because the mean of its divisors is an integer number (142290).

Almost surely, 2^3542640 is an apocalyptic number.

3542640 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 3542640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5691600).

3542640 is an abundant number, since it is smaller than the sum of its proper divisors (7840560).

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

3542640 is a wasteful number, since it uses less digits than its factorization.

3542640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 3542640 is about 1882.1902135544. The cubic root of 3542640 is about 152.4435336948.

The spelling of 3542640 in words is "three million, five hundred forty-two thousand, six hundred forty".