2572740 has 36 divisors (see below), whose sum is σ = 7804524. Its totient is φ = 686016.

The previous prime is 2572699. The next prime is 2572741. The reversal of 2572740 is 472752.

It can be written as a sum of positive squares in 2 ways, for example, as 304704 + 2268036 = 552^2 + 1506^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2572740² = 13237982215200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2572741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6967 + ... + 7326.

2^2572740 is an apocalyptic number.

2572740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2572740 is an abundant number, since it is smaller than the sum of its proper divisors (5231784).

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

2572740 is a wasteful number, since it uses less digits than its factorization.

2572740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14308 (or 14303 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 2572740 is about 1603.9763090520. The cubic root of 2572740 is about 137.0246283888.

The spelling of 2572740 in words is "two million, five hundred seventy-two thousand, seven hundred forty".