402006672 has 40 divisors (see below), whose sum is σ = 1153909280. Its totient is φ = 134002080.

The previous prime is 402006659. The next prime is 402006679. The reversal of 402006672 is 276600204.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (402006679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464854 + ... + 465717.

It is an arithmetic number, because the mean of its divisors is an integer number (28847732).

Almost surely, 2^402006672 is an apocalyptic number.

It is an amenable number.

402006672 is an abundant number, since it is smaller than the sum of its proper divisors (751902608).

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

402006672 is a wasteful number, since it uses less digits than its factorization.

402006672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930588 (or 930576 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 402006672 is about 20050.1040396303. The cubic root of 402006672 is about 738.0363522314.

Adding to 402006672 its reverse (276600204), we get a palindrome (678606876).

The spelling of 402006672 in words is "four hundred two million, six thousand, six hundred seventy-two".