406032780 has 24 divisors (see below), whose sum is σ = 1136891952. Its totient is φ = 108275392.

The previous prime is 406032773. The next prime is 406032817. The reversal of 406032780 is 87230604.

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

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, 3383547 + ... + 3383666.

It is an arithmetic number, because the mean of its divisors is an integer number (47370498).

Almost surely, 2^406032780 is an apocalyptic number.

It is an amenable number.

406032780 is an abundant number, since it is smaller than the sum of its proper divisors (730859172).

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

406032780 is a wasteful number, since it uses less digits than its factorization.

406032780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767225 (or 6767223 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 406032780 is about 20150.2550852340. The cubic root of 406032780 is about 740.4919908199.

The spelling of 406032780 in words is "four hundred six million, thirty-two thousand, seven hundred eighty".