405273672 has 32 divisors (see below), whose sum is σ = 1125760800. Its totient is φ = 135091152.

The previous prime is 405273653. The next prime is 405273749. The reversal of 405273672 is 276372504.

It is a happy number.

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

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, 937918 + ... + 938349.

It is an arithmetic number, because the mean of its divisors is an integer number (35180025).

Almost surely, 2^405273672 is an apocalyptic number.

It is an amenable number.

405273672 is an abundant number, since it is smaller than the sum of its proper divisors (720487128).

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

405273672 is a wasteful number, since it uses less digits than its factorization.

405273672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876282 (or 1876272 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 405273672 is about 20131.4100847407. The cubic root of 405273672 is about 740.0302349468.

The spelling of 405273672 in words is "four hundred five million, two hundred seventy-three thousand, six hundred seventy-two".