821265462 has 96 divisors (see below), whose sum is σ = 1971889920. Its totient is φ = 245868480.

The previous prime is 821265457. The next prime is 821265463. The reversal of 821265462 is 264562128.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821265463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1030048 + ... + 1030844.

It is an arithmetic number, because the mean of its divisors is an integer number (20540520).

Almost surely, 2^821265462 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 821265462, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985944960).

821265462 is an abundant number, since it is smaller than the sum of its proper divisors (1150624458).

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

821265462 is a wasteful number, since it uses less digits than its factorization.

821265462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 975 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 821265462 is about 28657.7295332341. The cubic root of 821265462 is about 936.4714026394.

The spelling of 821265462 in words is "eight hundred twenty-one million, two hundred sixty-five thousand, four hundred sixty-two".