82670438 has 4 divisors (see below), whose sum is σ = 124005660. Its totient is φ = 41335218.

The previous prime is 82670437. The next prime is 82670443. The reversal of 82670438 is 83407628.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×82670438² = 13668802638223688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82670431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20667608 + ... + 20667611.

It is an arithmetic number, because the mean of its divisors is an integer number (31001415).

Almost surely, 2^82670438 is an apocalyptic number.

82670438 is a deficient number, since it is larger than the sum of its proper divisors (41335222).

82670438 is a wasteful number, since it uses less digits than its factorization.

82670438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41335221.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 82670438 is about 9092.3285246410. The cubic root of 82670438 is about 435.6289628760.

The spelling of 82670438 in words is "eighty-two million, six hundred seventy thousand, four hundred thirty-eight".