11972540 has 24 divisors (see below), whose sum is σ = 25395552. Its totient is φ = 4740800.

The previous prime is 11972537. The next prime is 11972557. The reversal of 11972540 is 4527911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944 + ... + 4983.

It is an arithmetic number, because the mean of its divisors is an integer number (1058148).

Almost surely, 2^11972540 is an apocalyptic number.

11972540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11972540 is an abundant number, since it is smaller than the sum of its proper divisors (13423012).

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

11972540 is a wasteful number, since it uses less digits than its factorization.

11972540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6037 (or 6035 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 11972540 is about 3460.1358354839. The cubic root of 11972540 is about 228.7680826180.

The spelling of 11972540 in words is "eleven million, nine hundred seventy-two thousand, five hundred forty".