212751396 has 243 divisors, whose sum is σ = 679958643. Its totient is φ = 56010240.

The previous prime is 212751391. The next prime is 212751431. The reversal of 212751396 is 693157212.

212751396 = T₄₃₁ + T₄₃₂ + ... + T₁₁₀₆.

The square root of 212751396 is 14586.

It is a perfect power (a square), and thus also a powerful number.

212751396 is a `hidden beast` number, since 212 + 7 + 51 + 396 = 666.

212751396 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1920996 + 210830400 = 1386^2 + 14520^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 212751396.

It is not an unprimeable number, because it can be changed into a prime (212751391) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 12514780 + ... + 12514796.

Almost surely, 2^212751396 is an apocalyptic number.

212751396 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

212751396 is the 14586-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212751396

212751396 is an abundant number, since it is smaller than the sum of its proper divisors (467207247).

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

212751396 is a wasteful number, since it uses less digits than its factorization.

212751396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 46 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The cubic root of 212751396 is about 596.9768262850.

Multiplying 212751396 by its sum of digits (36), we get a square (7659050256 = 87516²).

212751396 divided by its sum of digits (36) gives a square (5909761 = 2431²).

The spelling of 212751396 in words is "two hundred twelve million, seven hundred fifty-one thousand, three hundred ninety-six".