461261988 has 36 divisors (see below), whose sum is σ = 1271965968. Its totient is φ = 139776240.

The previous prime is 461261981. The next prime is 461262041. The reversal of 461261988 is 889162164.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (461261981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 582006 + ... + 582797.

It is an arithmetic number, because the mean of its divisors is an integer number (35332388).

Almost surely, 2^461261988 is an apocalyptic number.

It is an amenable number.

461261988 is an abundant number, since it is smaller than the sum of its proper divisors (810703980).

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

461261988 is a wasteful number, since it uses less digits than its factorization.

461261988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164824 (or 1164819 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 461261988 is about 21477.0106858473. The cubic root of 461261988 is about 772.6495490780.

The spelling of 461261988 in words is "four hundred sixty-one million, two hundred sixty-one thousand, nine hundred eighty-eight".