406225078 has 8 divisors (see below), whose sum is σ = 696385872. Its totient is φ = 174096456.

The previous prime is 406225067. The next prime is 406225091. The reversal of 406225078 is 870522604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×406225078² = 330037627992212168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14508025 + ... + 14508052.

It is an arithmetic number, because the mean of its divisors is an integer number (87048234).

Almost surely, 2^406225078 is an apocalyptic number.

406225078 is a deficient number, since it is larger than the sum of its proper divisors (290160794).

406225078 is a wasteful number, since it uses less digits than its factorization.

406225078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29016086.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 406225078 is about 20155.0261225333. The cubic root of 406225078 is about 740.6088719045.

It can be divided in two parts, 40622 and 5078, that multiplied together give a triangular number (206278516 = T₂₀₃₁₁).

The spelling of 406225078 in words is "four hundred six million, two hundred twenty-five thousand, seventy-eight".