2739520 has 56 divisors (see below), whose sum is σ = 7461504. Its totient is φ = 938496.

The previous prime is 2739479. The next prime is 2739523. The reversal of 2739520 is 259372.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a d-powerful number, because it can be written as 2¹⁵ + 7 + 3³ + 9⁶ + 5⁷ + 2²¹ + 0 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2739523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1629 + ... + 2851.

2^2739520 is an apocalyptic number.

2739520 is a gapful number since it is divisible by the number (20) 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 2739520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3730752).

2739520 is an abundant number, since it is smaller than the sum of its proper divisors (4721984).

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

2739520 is a wasteful number, since it uses less digits than its factorization.

2739520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 2739520 is about 1655.1495400718. The cubic root of 2739520 is about 139.9237680220.

The spelling of 2739520 in words is "two million, seven hundred thirty-nine thousand, five hundred twenty".