246404640 has 96 divisors (see below), whose sum is σ = 778377600. Its totient is φ = 65521664.

The previous prime is 246404633. The next prime is 246404671. The reversal of 246404640 is 46404642.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×246404640² = 121430493227059200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 246404598 and 246404607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287092 + ... + 287948.

It is an arithmetic number, because the mean of its divisors is an integer number (8108100).

Almost surely, 2^246404640 is an apocalyptic number.

246404640 is a gapful number since it is divisible by the number (20) 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 246404640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389188800).

246404640 is an abundant number, since it is smaller than the sum of its proper divisors (531972960).

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

246404640 is a wasteful number, since it uses less digits than its factorization.

246404640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1466 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 246404640 is about 15697.2812932686. The cubic root of 246404640 is about 626.9260180968.

The spelling of 246404640 in words is "two hundred forty-six million, four hundred four thousand, six hundred forty".