406254780 has 72 divisors (see below), whose sum is σ = 1304804592. Its totient is φ = 101961216.

The previous prime is 406254769. The next prime is 406254791. The reversal of 406254780 is 87452604.

It is an interprime number because it is at equal distance from previous prime (406254769) and next prime (406254791).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63322 + ... + 69441.

It is an arithmetic number, because the mean of its divisors is an integer number (18122286).

Almost surely, 2^406254780 is an apocalyptic number.

It is an amenable number.

406254780 is an abundant number, since it is smaller than the sum of its proper divisors (898549812).

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

406254780 is a wasteful number, since it uses less digits than its factorization.

406254780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132795 (or 132790 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 406254780 is about 20155.7629476038. The cubic root of 406254780 is about 740.6269218558.

The spelling of 406254780 in words is "four hundred six million, two hundred fifty-four thousand, seven hundred eighty".