70400190 has 64 divisors (see below), whose sum is σ = 194586624. Its totient is φ = 15967488.

The previous prime is 70400173. The next prime is 70400203. The reversal of 70400190 is 9100407.

It is a super-2 number, since 2×70400190² = 9912373504072200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27547 + ... + 29993.

It is an arithmetic number, because the mean of its divisors is an integer number (3040416).

Almost surely, 2^70400190 is an apocalyptic number.

70400190 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 70400190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97293312).

70400190 is an abundant number, since it is smaller than the sum of its proper divisors (124186434).

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

70400190 is a wasteful number, since it uses less digits than its factorization.

70400190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 70400190 is about 8390.4821077218. The cubic root of 70400190 is about 412.9124176466.

Adding to 70400190 its reverse (9100407), we get a palindrome (79500597).

The spelling of 70400190 in words is "seventy million, four hundred thousand, one hundred ninety".