402666072 has 32 divisors (see below), whose sum is σ = 1012850880. Its totient is φ = 133397280.

The previous prime is 402666071. The next prime is 402666101. The reversal of 402666072 is 270666204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402666071) 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, 47554 + ... + 55377.

It is an arithmetic number, because the mean of its divisors is an integer number (31651590).

Almost surely, 2^402666072 is an apocalyptic number.

It is an amenable number.

402666072 is an abundant number, since it is smaller than the sum of its proper divisors (610184808).

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

402666072 is a wasteful number, since it uses less digits than its factorization.

402666072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103103 (or 103099 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 402666072 is about 20066.5411070269. The cubic root of 402666072 is about 738.4396584129.

The spelling of 402666072 in words is "four hundred two million, six hundred sixty-six thousand, seventy-two".