405274623 has 32 divisors (see below), whose sum is σ = 613448640. Its totient is φ = 236221440.

The previous prime is 405274609. The next prime is 405274631. The reversal of 405274623 is 326472504.

It is not a de Polignac number, because 405274623 - 2⁴ = 405274607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405274643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56563 + ... + 63323.

It is an arithmetic number, because the mean of its divisors is an integer number (19170270).

Almost surely, 2^405274623 is an apocalyptic number.

405274623 is a deficient number, since it is larger than the sum of its proper divisors (208174017).

405274623 is a wasteful number, since it uses less digits than its factorization.

405274623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6859.

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 405274623 is about 20131.4337045328. The cubic root of 405274623 is about 740.0308137887.

It can be divided in two parts, 40527 and 4623, that added together give a triangular number (45150 = T₃₀₀).

The spelling of 405274623 in words is "four hundred five million, two hundred seventy-four thousand, six hundred twenty-three".