70019910 has 128 divisors (see below), whose sum is σ = 197429760. Its totient is φ = 17635968.

The previous prime is 70019909. The next prime is 70019951. The reversal of 70019910 is 1991007.

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

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 429489 + ... + 429651.

It is an arithmetic number, because the mean of its divisors is an integer number (1542420).

Almost surely, 2^70019910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70019910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98714880).

70019910 is an abundant number, since it is smaller than the sum of its proper divisors (127409850).

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

70019910 is a wasteful number, since it uses less digits than its factorization.

70019910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 27.

The square root of 70019910 is about 8367.7900308265. The cubic root of 70019910 is about 412.1675999866.

The spelling of 70019910 in words is "seventy million, nineteen thousand, nine hundred ten".