406190730 has 32 divisors (see below), whose sum is σ = 1063482048. Its totient is φ = 98470400.

The previous prime is 406190717. The next prime is 406190753. The reversal of 406190730 is 37091604.

It is a happy number.

It is a super-3 number, since 3×406190730³ (a number of 27 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 615111 + ... + 615770.

It is an arithmetic number, because the mean of its divisors is an integer number (33233814).

Almost surely, 2^406190730 is an apocalyptic number.

406190730 is an abundant number, since it is smaller than the sum of its proper divisors (657291318).

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

406190730 is a wasteful number, since it uses less digits than its factorization.

406190730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230902.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 406190730 is about 20154.1740093709. The cubic root of 406190730 is about 740.5879974748.

The spelling of 406190730 in words is "four hundred six million, one hundred ninety thousand, seven hundred thirty".