10521270 has 24 divisors (see below), whose sum is σ = 27355536. Its totient is φ = 2805648.

The previous prime is 10521263. The next prime is 10521289. The reversal of 10521270 is 7212501.

It is a super-2 number, since 2×10521270² = 221394244825800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58362 + ... + 58541.

It is an arithmetic number, because the mean of its divisors is an integer number (1139814).

Almost surely, 2^10521270 is an apocalyptic number.

10521270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10521270 is an abundant number, since it is smaller than the sum of its proper divisors (16834266).

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

10521270 is a wasteful number, since it uses less digits than its factorization.

10521270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116916 (or 116913 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 10521270 is about 3243.6507210241. The cubic root of 10521270 is about 219.1237181734.

Adding to 10521270 its reverse (7212501), we get a palindrome (17733771).

The spelling of 10521270 in words is "ten million, five hundred twenty-one thousand, two hundred seventy".