10162640 has 20 divisors (see below), whose sum is σ = 23628324. Its totient is φ = 4065024.

The previous prime is 10162613. The next prime is 10162657. The reversal of 10162640 is 4626101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6130576 + 4032064 = 2476^2 + 2008^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63437 + ... + 63596.

Almost surely, 2^10162640 is an apocalyptic number.

10162640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10162640 is an abundant number, since it is smaller than the sum of its proper divisors (13465684).

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

10162640 is a wasteful number, since it uses less digits than its factorization.

10162640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127046 (or 127040 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 10162640 is about 3187.8895840352. The cubic root of 10162640 is about 216.6051843961.

Adding to 10162640 its reverse (4626101), we get a palindrome (14788741).

The spelling of 10162640 in words is "ten million, one hundred sixty-two thousand, six hundred forty".