10621380 has 192 divisors, whose sum is σ = 39352320. Its totient is φ = 2090880.

The previous prime is 10621343. The next prime is 10621397. The reversal of 10621380 is 8312601.

It is a super-2 number, since 2×10621380² = 225627426208800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 559011 + ... + 559029.

It is an arithmetic number, because the mean of its divisors is an integer number (204960).

Almost surely, 2^10621380 is an apocalyptic number.

10621380 is a gapful number since it is divisible by the number (10) 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 10621380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19676160).

10621380 is an abundant number, since it is smaller than the sum of its proper divisors (28730940).

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

10621380 is a wasteful number, since it uses less digits than its factorization.

10621380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 10621380 is about 3259.0458726443. The cubic root of 10621380 is about 219.8165136763.

Adding to 10621380 its reverse (8312601), we get a palindrome (18933981).

It can be divided in two parts, 1062 and 1380, that added together give a palindrome (2442).

The spelling of 10621380 in words is "ten million, six hundred twenty-one thousand, three hundred eighty".