406751840 has 48 divisors (see below), whose sum is σ = 1048314960. Its totient is φ = 147909120.

The previous prime is 406751831. The next prime is 406751869. The reversal of 406751840 is 48157604.

It is a self number, because there is not a number n which added to its sum of digits gives 406751840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113795 + ... + 117314.

It is an arithmetic number, because the mean of its divisors is an integer number (21839895).

Almost surely, 2^406751840 is an apocalyptic number.

406751840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406751840 is an abundant number, since it is smaller than the sum of its proper divisors (641563120).

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

406751840 is a wasteful number, since it uses less digits than its factorization.

406751840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231135 (or 231127 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 406751840 is about 20168.0896467662. The cubic root of 406751840 is about 740.9288555171.

The spelling of 406751840 in words is "four hundred six million, seven hundred fifty-one thousand, eight hundred forty".