10212540 has 48 divisors (see below), whose sum is σ = 30797088. Its totient is φ = 2513664.

The previous prime is 10212539. The next prime is 10212541. The reversal of 10212540 is 4521201.

It is an interprime number because it is at equal distance from previous prime (10212539) and next prime (10212541).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5767 + ... + 7326.

It is an arithmetic number, because the mean of its divisors is an integer number (641606).

Almost surely, 2^10212540 is an apocalyptic number.

10212540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212540 is an abundant number, since it is smaller than the sum of its proper divisors (20584548).

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

10212540 is a wasteful number, since it uses less digits than its factorization.

10212540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13118 (or 13116 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 10212540 is about 3195.7064946581. The cubic root of 10212540 is about 216.9591264235.

Adding to 10212540 its reverse (4521201), we get a palindrome (14733741).

The spelling of 10212540 in words is "ten million, two hundred twelve thousand, five hundred forty".